Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
IOTD/TP
The system is subjective. It’s all down to human judges picking images based on the merits as described in the rules that you have read. What may be an IOTD one day, may not even be a TPN a few days later all based on what is currently in the judging pool at that time. While your Horsehead image is nice, it doesn’t have anything that differentiates itself from every other good Horsehead image. If you go for a popular target like that, you need something that will catch the judges’ eyes. A framing nobody has thought of that makes you reinterpret the image, usage of new filters to add something new to it, integration time that pulls out details rarely seen, that kind of stuff. Or you could try and shoot objects that are less common and just do them well. Another thing to consider is it will be a lot harder to get a TPN, TP, or IOTD of an image of Comet Lemmon right now as everyone and their mother is posting a photo of it. So, there is some consideration to be had when timing your publication.
Thomas · Nov 3, 2025 at 05:58 PM
The system is subjective. It’s all down to human judges picking images based on the merits as described in the rules that you have read. What may be an IOTD one day, may not even be a TPN a few days later all based on what is currently in the judging pool at that time. While your Horsehead image is nice, it doesn’t have anything that differentiates itself from every other good Horsehead image. If you go for a popular target like that, you need something that will catch the judges’ eyes. A framing nobody has thought of that makes you reinterpret the image, usage of new filters to add something new to it, integration time that pulls out details rarely seen, that kind of stuff. Or you could try and shoot objects that are less common and just do them well. Another thing to consider is it will be a lot harder to get a TPN, TP, or IOTD of an image of Comet Lemmon right now as everyone and their mother is posting a photo of it. So, there is some consideration to be had when timing your publication.
I figured that was the case. My only issue is im too vanilla essentially. I do what everyone else does. If i go for something that i dont see done or at least not very well and do it fairly well, theres more of a “wow” moment that makes them want to hit yes or whatever the upvote method is.
Agree with others here. It’s really difficult to get TPN, TP or IOTD with even a really nice image taken with a normal setup on a common target with average seeing and a standard framing. You’ve gotten a few TPNs which is great!
Approaching something in a unique way either from an equipment standpoint, framing or unique target done well will help I think. I just got back into this last year, and am still doing my “tour” of fairly standard targets to re-hone my skills and settle in. I know I’ll not likely get an IOTD for them because of above, although I’m starting to try different things and have had more TPNs lately.
It’s nice to get affirmation you’re on a good track, but don’t feel compelled to compete.
Another way to get more exposure to your images is just to like other peoples images. I think a lot of people when they get a like, especially from a name they don’t recognize, they pretty much always go that persons profile and looks at at least a few photos.
Then there are times I’m pretty inactive on the website, and all of a sudden out of nowhere I’ll get 5 or 6 even though I haven’t even logged in for a while.
As far as IOTD, I think Thomas explained it pretty well and I completely agree. Timing plays a huge part. And having something that stands out is another big thing.
John Nelson · Nov 3, 2025, 03:05 PM
Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
John,
While you should always capture and process your images in the way YOU like them, the IOTD process is a way to see if what you are doing is along the lines of what a larger group of people like. The IOTD team is around 50 experienced imagers I believe. Their opinions may or may not be important to you.
As one of the team members I can give you some feedback on the image and how it would differ from one that might get voted up the ladder. Caveats: these are subjective comments, they are MY opinions, and what gets voted up can change on any day.
Looking at your Horsehead here’s what I see:
The data looks good and the image is pleasing to the eye
The biggest issue is the color balance. In general it seems shifted to yellow. If that yellow (or green) where shifted toward Magenta it would help.
The composition is a little tight and three of the key blue nebulae are either really close to the edge or cut off by the edge. Shifting the horsehead to the upper right one-third point might have resolved this.
There is just a little too much noise reduction and the details seem to have been smoothed out. A little residual noise is usually better.
This is one of the most common objects people image and the reviewers will have a higher bar for those. It’s possible there were many horseheads in the queue and so they may only be selected the very best.
I hope that is responsive to your original post!
Kevin
I like iotd it is a nice way to find inspiration.
apart from that i really feel the catchphrase dylan o'donnell uses in his videos „everything is meaningless. we are all going to die“
This hobby is ruled by rich guys with big scopes, with access to pristine skies high up on mountains. I am into the hobby for maybe 5 or 6 years now, i have seen most targets a million times, which is probably spot on as >99% of the night sky have been photographed this often. Seeing the next and the next and the next horsehead almost makes me throw up. Analysis paralysis - is the asa600 really showing more details in it as the little redcat 51 with the osc camera? Maybe?!?
Kevin Morefield · Nov 3, 2025 at 08:03 PM
John Nelson · Nov 3, 2025, 03:05 PM
Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
John,
While you should always capture and process your images in the way YOU like them, the IOTD process is a way to see if what you are doing is along the lines of what a larger group of people like. The IOTD team is around 50 experienced imagers I believe. Their opinions may or may not be important to you.
As one of the team members I can give you some feedback on the image and how it would differ from one that might get voted up the ladder. Caveats: these are subjective comments, they are MY opinions, and what gets voted up can change on any day.
Looking at your Horsehead here’s what I see:
The data looks good and the image is pleasing to the eye
The biggest issue is the color balance. In general it seems shifted to yellow. If that yellow (or green) where shifted toward Magenta it would help.
The composition is a little tight and three of the key blue nebulae are either really close to the edge or cut off by the edge. Shifting the horsehead to the upper right one-third point might have resolved this.
There is just a little too much noise reduction and the details seem to have been smoothed out. A little residual noise is usually better.
This is one of the most common objects people image and the reviewers will have a higher bar for those. It’s possible there were many horseheads in the queue and so they may only be selected the very best.
I hope that is responsive to your original post!
Kevin
Super helpful thank you!
Anderl · Nov 3, 2025 at 08:05 PM
I like iotd it is a nice way to find inspiration.
apart from that i really feel the catchphrase dylan o'donnell uses in his videos „everything is meaningless. we are all going to die“
This hobby is ruled by rich guys with big scopes, with access to pristine skies high up on mountains. I am into the hobby for maybe 5 or 6 years now, i have seen most targets a million times, which is probably spot on as >99% of the night sky have been photographed this often. Seeing the next and the next and the next horsehead almost makes me throw up. Analysis paralysis - is the asa600 really showing more details in it as the little redcat 51 with the osc camera? Maybe?!?
Something ive thought about to. Im even worse off since i dont have a suitable backyard to do this in. So i have to drive somewhere(usually 10-15 minutes away) set it all up, calibrate it, sit there doing nothing for hours, take my calibration frames, take it apart, drive home, put it all away, and rinse and repeat. Been doing that for 2 years now. Maybe thats why i even care this much, is because i put too much effort in.
John Nelson · Nov 3, 2025, 09:00 PM
Anderl · Nov 3, 2025 at 08:05 PM
I like iotd it is a nice way to find inspiration.
apart from that i really feel the catchphrase dylan o'donnell uses in his videos „everything is meaningless. we are all going to die“
This hobby is ruled by rich guys with big scopes, with access to pristine skies high up on mountains. I am into the hobby for maybe 5 or 6 years now, i have seen most targets a million times, which is probably spot on as >99% of the night sky have been photographed this often. Seeing the next and the next and the next horsehead almost makes me throw up. Analysis paralysis - is the asa600 really showing more details in it as the little redcat 51 with the osc camera? Maybe?!?
Something ive thought about to. Im even worse off since i dont have a suitable backyard to do this in. So i have to drive somewhere(usually 10-15 minutes away) set it all up, calibrate it, sit there doing nothing for hours, take my calibration frames, take it apart, drive home, put it all away, and rinse and repeat. Been doing that for 2 years now. Maybe thats why i even care this much, is because i put too much effort in.
I did the same thing for several years. I lived in Denver when I really got into astrophotography and let me tell you, Denver light pollution is not helpful! I would drive 1-2hrs one way just to get out of the city far enough. Started to get good, well good in my eyes, and then we moved to the UK. I thought light pollution was bad; try clouds and rain for months on end. Now I have a remote observatory and getting some top notch images (again what I think are top notch images). Still doing rounds of the usual suspects and just having fun doing it. Sure, a TPN or TP is nice (not holding my breath for a IOTD lol) but it’s not why I do it. Enjoy those nights out with your equipment under the stars. Not a lot of people get that level of peacefulness and it shouldn’t be taken for granted.
Another bit of advice in terms of the IOTD process, look through the catalog of prior images on here before starting your next project. Use all of the various sorting and filtering options to get a feel for what people like and what has or has not been done. If your search only comes up with a few images, then do that target and do it well! Seeing what others have done is a good way to manage your expectations in regards to this process.
John Nelson · Nov 3, 2025, 03:05 PM
Can anyone tell me what i can do differently
Hi John, I visited your gallery, liked several of your images and started to follow you.
I hope that you don’t mind that I downloaded the Horsehead image and looked at the Histogram. IMHO (I’m just close to two years into processing and still have a LOT to learn) the histogram showed that the Blue channel starts close to zero while the Red and Green channels show a huge offset.
Sorry that I took the liberty to adjust the histogram (albeit a bit difficult with an already fully processed image) and post the result here.
IMO that simple adjustment made the image less bright, removed a lot of the green cast and made some hidden details visible. And I’m saying this from my preferences, you or others might dislike it.
This is also one of the aspects which makes this hobby more fun; each image of the same object is different.
📷 AstroBin_JohnNelson_Histogram_pinchofLHT_d0dea2fd-61a1-4c50-aab0-5a939be964d3.jpg
Habib Sekha · Nov 3, 2025 at 11:03 PM
John Nelson · Nov 3, 2025, 03:05 PM
Can anyone tell me what i can do differently
Hi John, I visited your gallery, liked several of your images and started to follow you.
I hope that you don’t mind that I downloaded the Horsehead image and looked at the Histogram. IMHO (I’m just close to two years into processing and still have a LOT to learn) the histogram showed that the Blue channel starts close to zero while the Red and Green channels show a huge offset.
Sorry that I took the liberty to adjust the histogram (albeit a bit difficult with an already fully processed image) and post the result here.
IMO that simple adjustment made the image less bright, removed a lot of the green cast and made some hidden details visible. And I’m saying this from my preferences, you or others might dislike it.
This is also one of the aspects which makes this hobby more fun; each image of the same object is different.
📷 AstroBin_JohnNelson_Histogram_pinchofLHT_d0dea2fd-61a1-4c50-aab0-5a939be964d3.jpg
John Nelson · Nov 3, 2025, 11:18 PM
i dont mind at all. I messed with it a little bit too after reading some of these. Curious to see if this is better.Horsehead & Flame HARGB.jpeg
In my opinion it is better, the histogram looks better, however, there is still room for an even better overlap of the channels.
Kevin Morefield · Nov 3, 2025, 08:03 PM
This is one of the most common objects people image and the reviewers will have a higher bar for those.
Well John, if you read this and consider that the very common Orion Nebula image by you got a TPN then that is IMO a major accomplishment. Congratulations!
To be honest with you, the original image you posted in your first entry is perfect! It’s an inspiration for me and for others to aim for that level until we create something similar or even better.
The problem around here these days is that the system has a human touch, and to make things worse, they know exactly who each photo belongs to when they’re voting.
I don't want to put things this way, but this is how I feel and my personal opinion about the IOTD/TP:
If you’re well-known in the astrophotography community, for example, by winning international contests or even being mentioned in the tough ones; if you’re a YouTuber in the astrophotography community, or even an amateur astrophotographer who makes a new discovery that helps further professional studies, your name will definitely be around the Top Picks images and sometimes the IOTD. Because one of the bi-products of that is the number of followers that you acquire on AstroBin.
People can say otherwise and come up with countless justifications to defend their opinions, sometimes claiming a great image isn’t really that good because of this or that (which is never the case and often hypocritical). But at the end of the day, most of those same guys and girls will be there. Sometimes with great images, sometimes with crappy ones and occasionally they’ll throw a bone to the minor leagues just to keep appearances intact.
The tip of the iceberg: go to the https://app.astrobin.com/explore/astrophotographers-list#image-data and put them by order of the number of followers to the biggest up to the lowest and cross some of those names with google, youtube, facebook and places of that kind of content. You'll see what I mean.
I'm not trying to start a sub discution on this matter, I don't even care about the IOTD/TP and this is my first and only entry about that theme, because I have more to do in life than be in witch hunts. Astrobin for me is just a place to keep my best photos in order, do some research on targets and equipment used, see what some friends are doing around here and nothing more. But sometimes in here, things have too much coincidences that makes a few of us lifting an eyebrow.
Well, like I said above this is just a personal opinion. Regarding the photo, you have a great image there that most of us don't even achive in our wild dreams.
Keep the good work and to the rest of the guys in this entry, I wish you all clear skies, a full bank account to buy more equipment and the time to use it.
Regards,
Cesar
John Nelson:
Something ive thought about to. Im even worse off since i dont have a suitable backyard to do this in. So i have to drive somewhere(usually 10-15 minutes away) set it all up, calibrate it, sit there doing nothing for hours, take my calibration frames, take it apart, drive home, put it all away, and rinse and repeat. Been doing that for 2 years now. Maybe thats why i even care this much, is because i put too much effort in.
John - I have a ton of respect for people like you that drive to dark sky sites, set up their equipment, image through the night, tear it down and return home. It is to your credit that you are getting such amazing images. In terms of awards - you are "competing" with people who have spend tens of thousands of dollars setting up large scopes in places with much longer available clear and dark sky time than you, much better seeing, and then spend thousands each month as facility fees. Others think nothing of buying an ASI 6200 camera costing over $3K as a spare for when their $8K camera dies while they wait for another $8K camera. Do what you are doing because you are passionate about it, not to compete with people with very different access to time and resources.
Observatório Astrográfico do Boqueirão · Nov 4, 2025, 12:05 AM
The problem around here these days is that the system has a human touch, and to make things worse, they know exactly who each photo belongs to when they’re voting.
You really should read the page about the IotD/Top Pick process before making claims like this. Of note:
“The IOTD/TP works like a funnel and is comprised of 3 teams. Images progress over 3 stages, and the first 2 stages are presented with anonymized images in order to minimize the risk of unconscious biases.”
It’s not until they reach consideration for IotD (the last phase in the funnel) that the judges are aware of who the image came from.
Hello everyone,
A quick clarification (as I am a judge in this process): although we judges know the identity of the image's author, this factor is never taken into account when choosing the IOTD.
If it is taken into account, it is “negatively,” to prevent the same person from winning the IOTD several days in a row and to ensure variety in the awards.
JB
You have many beautiful images to be very proud of! I appreciate your work and like others above, have started to follow you.
Like Thomas said above, not only do you have to have a very good images, you have to be in the right place at the right time.
It is really a good feeling to be recognized for images that you spend so much of yourself capturing and processing, but this community is chocked full of very talented folks that have a LOT more time and resources than we have to devote to this hobby. That is fine though, because everything else in this like works in a similar way.
Don't get me wrong though, getting a vote or two or even nicer, a TP is really a good feeling. Like you, I have submitted some images that I thought were top notch and they didn't get a single vote. It is disappointing, but when you put things into perspective, it really doesn't matter.
I started this hobby with very minimal equipment (and have only gone up a notch or two since then) and my main goal was to capture a glimpse of the beauty above. I think that I have done that and the rest is gravy!
I for one, enjoy your images very much! Keep 'em coming!
Jim
Also John, if it makes you feel any better, in the last 12 photos I’ve submitted to IOTD I haven’t gotten a single promotion. Pretty much the only photos I have that even recieved a single promotion are from between Jan 2024 to April 2024. My newer images in my opinion at least are so much better, but so are everybody else’s at the same time.
Kevin Morefield · Nov 3, 2025, 08:03 PM
John Nelson · Nov 3, 2025, 03:05 PM
Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
John,
While you should always capture and process your images in the way YOU like them, the IOTD process is a way to see if what you are doing is along the lines of what a larger group of people like. The IOTD team is around 50 experienced imagers I believe. Their opinions may or may not be important to you.
As one of the team members I can give you some feedback on the image and how it would differ from one that might get voted up the ladder. Caveats: these are subjective comments, they are MY opinions, and what gets voted up can change on any day.
Looking at your Horsehead here’s what I see:
The data looks good and the image is pleasing to the eye
The biggest issue is the color balance. In general it seems shifted to yellow. If that yellow (or green) where shifted toward Magenta it would help.
The composition is a little tight and three of the key blue nebulae are either really close to the edge or cut off by the edge. Shifting the horsehead to the upper right one-third point might have resolved this.
There is just a little too much noise reduction and the details seem to have been smoothed out. A little residual noise is usually better.
This is one of the most common objects people image and the reviewers will have a higher bar for those. It’s possible there were many horseheads in the queue and so they may only be selected the very best.
I hope that is responsive to your original post!
Kevin
Kevin, along these lines; I’ve always wondered if the narrative describing the image is considered when judging for TPN, TP or IOTD. Any thoughts on this?
Patrick Graham · Nov 4, 2025 at 03:27 PM
Kevin Morefield · Nov 3, 2025, 08:03 PM
John Nelson · Nov 3, 2025, 03:05 PM
Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
John,
While you should always capture and process your images in the way YOU like them, the IOTD process is a way to see if what you are doing is along the lines of what a larger group of people like. The IOTD team is around 50 experienced imagers I believe. Their opinions may or may not be important to you.
As one of the team members I can give you some feedback on the image and how it would differ from one that might get voted up the ladder. Caveats: these are subjective comments, they are MY opinions, and what gets voted up can change on any day.
Looking at your Horsehead here’s what I see:
The data looks good and the image is pleasing to the eye
The biggest issue is the color balance. In general it seems shifted to yellow. If that yellow (or green) where shifted toward Magenta it would help.
The composition is a little tight and three of the key blue nebulae are either really close to the edge or cut off by the edge. Shifting the horsehead to the upper right one-third point might have resolved this.
There is just a little too much noise reduction and the details seem to have been smoothed out. A little residual noise is usually better.
This is one of the most common objects people image and the reviewers will have a higher bar for those. It’s possible there were many horseheads in the queue and so they may only be selected the very best.
I hope that is responsive to your original post!
Kevin
Kevin, along these lines; I’ve always wondered if the narrative describing the image is considered when judging for TPN, TP or IOTD. Any thoughts on this?
No it is not. We don’t see the narrative when promoting. Only the image, the title and the equipment. I believe the final judges for IOTD do see the full narrative and the name of the imager.
Kevin Morefield · Nov 4, 2025, 04:09 PM
Patrick Graham · Nov 4, 2025 at 03:27 PM
Kevin Morefield · Nov 3, 2025, 08:03 PM
John Nelson · Nov 3, 2025, 03:05 PM
Something i havent really figured out yet is how this system works. Ive read the rules and know the process, so i try to keep my standard at that level (It helps me improve anyways). But the thing i keep on noticing is that im never really chosen for this. I know its not a competition and i dont really use it for that, but i think it helps float my pictures to more people. But there seems to be something im not doing right because i never get voted for anything. Im not saying my pictures are perfect (some are obviously worse then others), but i do think they hit that standard at least. This one is arguably my best, i know its a but bright but that was just to pull up the brown dust, outside of that im not sure whats wrong with it. Horsehead & Flame HARGB.jpeg. Can anyone tell me what i can do differently? Also if youre more interested look at my other ones and do the same. I would like to know where i am going wrong. Thank you.
John,
While you should always capture and process your images in the way YOU like them, the IOTD process is a way to see if what you are doing is along the lines of what a larger group of people like. The IOTD team is around 50 experienced imagers I believe. Their opinions may or may not be important to you.
As one of the team members I can give you some feedback on the image and how it would differ from one that might get voted up the ladder. Caveats: these are subjective comments, they are MY opinions, and what gets voted up can change on any day.
Looking at your Horsehead here’s what I see:
The data looks good and the image is pleasing to the eye
The biggest issue is the color balance. In general it seems shifted to yellow. If that yellow (or green) where shifted toward Magenta it would help.
The composition is a little tight and three of the key blue nebulae are either really close to the edge or cut off by the edge. Shifting the horsehead to the upper right one-third point might have resolved this.
There is just a little too much noise reduction and the details seem to have been smoothed out. A little residual noise is usually better.
This is one of the most common objects people image and the reviewers will have a higher bar for those. It’s possible there were many horseheads in the queue and so they may only be selected the very best.
I hope that is responsive to your original post!
Kevin
Kevin, along these lines; I’ve always wondered if the narrative describing the image is considered when judging for TPN, TP or IOTD. Any thoughts on this?
No it is not. We don’t see the narrative when promoting. Only the image, the title and the equipment. I believe the final judges for IOTD do see the full narrative and the name of the imager.
Final question from me. Do you guys get tired of seeing the same person submit their images time and time again or is that not an issue at all?
I’d like to get an IOTD, but considering I don’t even know how to go about it, that’s not likely. lol I consider myself to be a middle of the road imager. I don’t have the skillset/time/location to nudge my images higher anyway, but it is nice to see top notch work. TBH, I like seeing backyard images more than ones from remote observatories and such, because it gives me a benchmark to aim for. When I see awesome images taken from backyards, it gives me an idea of what I might be able to accomplish, versus setting my standards from “perfect” locations. Although, I have to admit, I’d like to do remote imaging at some point.
John Nelson · Nov 4, 2025, 05:07 PM
Final question from me. Do you guys get tired of seeing the same person submit their images time and time again or is that not an issue at all?
As a submitter (first round), I have no idea who the imager is, but I do get tired of it really only in two cases. Otherwise if someone was able to put out a brand new image every day, I don’t mind seeing them at all. I think it’s pretty common for some of the solar imagers to post a full disk image almost every day.
Anyway the first case is when they submit similar images all right in a row and the only difference is the color palette they used, or they’ll have a slightly different crop/rotation. It’s rare, but it happens.
Then the other one that happens more often is mainly solar/lunar/planetary imagers. Sometimes they’ll submit a bunch of images that are practically the same thing. Yes they’re different data, but they’re taken like 5 minutes apart. To me, they should pick one and submit that one to the process.