Ota Size, Scope Decisions, and Gear to fit remote imaging requirements.

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Wes Schwarz avatar

This is a repost from cloudynights. I’m trying to make a decision of a scope purchase for remote imaging.

I would appreciate any feedback.

Im currently debating between the Askar SQA 106 and 130 scopes. I have secured a pier at a remote observatory and to stay in the $200 a month class I need to have my rig setup under 35". I will be setting up at this new remote location https://deathvalleyobservatories.com/

A flat panel like the wanderer which lays at about 180 against the ota when open does not impact the 35" length.

the sqa 106 is 23" with dew shield extended

the 130 is 25" with it retracted and 30" extended

I am also planning to use an asi 6200mm pro with a 7x2 efw and a wanderer rotator

A quick chat gpt assessment indicates the following with everything connected including usb cables.

SQA106

Dew Shield Retracted: 20.3" + 6.7–7.8" = ~27.0–28.1"

Dew Shield Extended: 23.1" + 6.7–7.8" = ~29.8–30.9"

SQA130

Dew Shield Retracted: 25" + 6.7–7.8" = ~31.7–32.8"

Dew Shield Extended: 30" + 6.7–7.8" = ~36.7–37.8"

What that means in plain English

SQA106 still looks comfortable.

SQA130 is still borderline retracted and over a 35" cap with the dew shield extended.

What Id like now is some real world feedback.

Im using a strainwave so the distance from RA to the top of the scope is very compact compared to an eq mount.

I would prefer to use the bigger 130 but Im just not sure its going to work especially when I need to focus the scope.

I can ask them to just partially extend the dew shield by maybe 1"

What would be huge is if you can remove the manual rotator from the focuser of the SQA130 and retain the focuser itself.

That would shave a good bit off of the scope. Im sure the focuser itself will be fine for my setup.

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SonnyE avatar

I’ve been thinking about this since you first posted it (or I first saw it).

I do remote imaging but not at the level you are speaking of. My remote Imaging consists of my backyard to my home office via WiFi. But it is remote in many of the ways. ~75 feet as the crow flies.

Due to the finicky ways of my equipment, I don’t dare put it any great distance from me. I experience enough problems with software acting up to know it isn’t for me.

One of your dilemmas I faced when installing my FR/FF and Rotator. I got rid of the manual rotator and installed my FR/FF directly to the back of my telescope, an AT130mm EDT refractor. Final answer with my equipment, Dew shield retracted, is ~ 42 inches overall length. It was a requirement of the manufacturer when installing the FR/FF prescribed for the telescope. It also helped me to assemble my imaging train into a ridged threaded assembly. Removing the manual rotator was simply unscrewing it from the focusing tube of my telescope and screwing in the FR/FF. It left me with 728mm FL @ f 5.8.

It seems odd to me that your planned provider has chosen the 35” threshold as a cutoff point. Seems rather limiting, or a way to squeeze more funds from potential users. Do they provide a list of what fits within their 35” requirement? It must be a requirement to avoid collisions between customers equipment’s. “This is your lot size for our development.”

I believe you will be better off doing the SQA106, just for peace of mind you won’t get stuck with some other arbitrary charges in the future.

I “frog hopped” from my 86mm triplet to my 130mm. My only physical “requirement” was to avoid a block wall near my location. Which wasn’t a real problem at all. I did not need to move my mount.

I don’t see where you listed your imaging train length. That might alter your 35” length limitation. (Seems quite an arbitrary length requirement. We’ll put the piers 72” apart and impose a 35” length on the agreement).

I did find this: Frequently Asked Questions - Death Valley Observatories

So my suggestion would be to contact them about your specific concerns. My specific concerns would be response times to any problems that happen. Reality may differ from what appears to be promised.

Tony Gondola avatar

SonnyE · Apr 13, 2026, 05:25 PM

I’ve been thinking about this since you first posted it (or I first saw it).

I do remote imaging but not at the level you are speaking of. My remote Imaging consists of my backyard to my home office via WiFi. But it is remote in many of the ways. ~75 feet as the crow flies.

Due to the finicky ways of my equipment, I don’t dare put it any great distance from me. I experience enough problems with software acting up to know it isn’t for me.

One of your dilemmas I faced when installing my FR/FF and Rotator. I got rid of the manual rotator and installed my FR/FF directly to the back of my telescope, an AT130mm EDT refractor. Final answer with my equipment, Dew shield retracted, is ~ 42 inches overall length. It was a requirement of the manufacturer when installing the FR/FF prescribed for the telescope. It also helped me to assemble my imaging train into a ridged threaded assembly. Removing the manual rotator was simply unscrewing it from the focusing tube of my telescope and screwing in the FR/FF. It left me with 728mm FL @ f 5.8.

It seems odd to me that your planned provider has chosen the 35” threshold as a cutoff point. Seems rather limiting, or a way to squeeze more funds from potential users. Do they provide a list of what fits within their 35” requirement? It must be a requirement to avoid collisions between customers equipment’s. “This is your lot size for our development.”

I believe you will be better off doing the SQA106, just for peace of mind you won’t get stuck with some other arbitrary charges in the future.

I “frog hopped” from my 86mm triplet to my 130mm. My only physical “requirement” was to avoid a block wall near my location. Which wasn’t a real problem at all. I did not need to move my mount.

I don’t see where you listed your imaging train length. That might alter your 35” length limitation. (Seems quite an arbitrary length requirement. We’ll put the piers 72” apart and impose a 35” length on the agreement).

I did find this: Frequently Asked Questions - Death Valley Observatories

So my suggestion would be to contact them about your specific concerns. My specific concerns would be response times to any problems that happen. Reality may differ from what appears to be promised.

I guess the reason is to optimize spacing in order to maximize profits. These installations are money factories based on solid business models. The closer the rigs can be spaced together, the higher the income density is. Honestly, I was tempted for awhile. Not to place a scope for hosting but for doing a hosting site myself.

Wes Schwarz avatar

SonnyE · Apr 13, 2026, 05:25 PM

I’ve been thinking about this since you first posted it (or I first saw it).

I do remote imaging but not at the level you are speaking of. My remote Imaging consists of my backyard to my home office via WiFi. But it is remote in many of the ways. ~75 feet as the crow flies.

Due to the finicky ways of my equipment, I don’t dare put it any great distance from me. I experience enough problems with software acting up to know it isn’t for me.

One of your dilemmas I faced when installing my FR/FF and Rotator. I got rid of the manual rotator and installed my FR/FF directly to the back of my telescope, an AT130mm EDT refractor. Final answer with my equipment, Dew shield retracted, is ~ 42 inches overall length. It was a requirement of the manufacturer when installing the FR/FF prescribed for the telescope. It also helped me to assemble my imaging train into a ridged threaded assembly. Removing the manual rotator was simply unscrewing it from the focusing tube of my telescope and screwing in the FR/FF. It left me with 728mm FL @ f 5.8.

It seems odd to me that your planned provider has chosen the 35” threshold as a cutoff point. Seems rather limiting, or a way to squeeze more funds from potential users. Do they provide a list of what fits within their 35” requirement? It must be a requirement to avoid collisions between customers equipment’s. “This is your lot size for our development.”

I believe you will be better off doing the SQA106, just for peace of mind you won’t get stuck with some other arbitrary charges in the future.

I “frog hopped” from my 86mm triplet to my 130mm. My only physical “requirement” was to avoid a block wall near my location. Which wasn’t a real problem at all. I did not need to move my mount.

I don’t see where you listed your imaging train length. That might alter your 35” length limitation. (Seems quite an arbitrary length requirement. We’ll put the piers 72” apart and impose a 35” length on the agreement).

I did find this: Frequently Asked Questions - Death Valley Observatories

So my suggestion would be to contact them about your specific concerns. My specific concerns would be response times to any problems that happen. Reality may differ from what appears to be promised.

They have been pretty reasonable about my choice and they are willing to work with me on the 130. I think thats what Im going to go with now that they are back in stock.

SonnyE avatar

Tony Gondola · Apr 13, 2026, 05:46 PM

SonnyE · Apr 13, 2026, 05:25 PM

I’ve been thinking about this since you first posted it (or I first saw it).

I do remote imaging but not at the level you are speaking of. My remote Imaging consists of my backyard to my home office via WiFi. But it is remote in many of the ways. ~75 feet as the crow flies.

Due to the finicky ways of my equipment, I don’t dare put it any great distance from me. I experience enough problems with software acting up to know it isn’t for me.

One of your dilemmas I faced when installing my FR/FF and Rotator. I got rid of the manual rotator and installed my FR/FF directly to the back of my telescope, an AT130mm EDT refractor. Final answer with my equipment, Dew shield retracted, is ~ 42 inches overall length. It was a requirement of the manufacturer when installing the FR/FF prescribed for the telescope. It also helped me to assemble my imaging train into a ridged threaded assembly. Removing the manual rotator was simply unscrewing it from the focusing tube of my telescope and screwing in the FR/FF. It left me with 728mm FL @ f 5.8.

It seems odd to me that your planned provider has chosen the 35” threshold as a cutoff point. Seems rather limiting, or a way to squeeze more funds from potential users. Do they provide a list of what fits within their 35” requirement? It must be a requirement to avoid collisions between customers equipment’s. “This is your lot size for our development.”

I believe you will be better off doing the SQA106, just for peace of mind you won’t get stuck with some other arbitrary charges in the future.

I “frog hopped” from my 86mm triplet to my 130mm. My only physical “requirement” was to avoid a block wall near my location. Which wasn’t a real problem at all. I did not need to move my mount.

I don’t see where you listed your imaging train length. That might alter your 35” length limitation. (Seems quite an arbitrary length requirement. We’ll put the piers 72” apart and impose a 35” length on the agreement).

I did find this: Frequently Asked Questions - Death Valley Observatories

So my suggestion would be to contact them about your specific concerns. My specific concerns would be response times to any problems that happen. Reality may differ from what appears to be promised.

I guess the reason is to optimize spacing in order to maximize profits. These installations are money factories based on solid business models. The closer the rigs can be spaced together, the higher the income density is. Honestly, I was tempted for awhile. Not to place a scope for hosting but for doing a hosting site myself.

Same as devolopers with land. How many homes can we cram on this footprint property.

Babysitting 487 piers with Myriads of problematic rigs is not my idea of retirement income.

SonnyE avatar

Wes Schwarz · Apr 14, 2026, 05:26 AM

SonnyE · Apr 13, 2026, 05:25 PM

I’ve been thinking about this since you first posted it (or I first saw it).

I do remote imaging but not at the level you are speaking of. My remote Imaging consists of my backyard to my home office via WiFi. But it is remote in many of the ways. ~75 feet as the crow flies.

Due to the finicky ways of my equipment, I don’t dare put it any great distance from me. I experience enough problems with software acting up to know it isn’t for me.

One of your dilemmas I faced when installing my FR/FF and Rotator. I got rid of the manual rotator and installed my FR/FF directly to the back of my telescope, an AT130mm EDT refractor. Final answer with my equipment, Dew shield retracted, is ~ 42 inches overall length. It was a requirement of the manufacturer when installing the FR/FF prescribed for the telescope. It also helped me to assemble my imaging train into a ridged threaded assembly. Removing the manual rotator was simply unscrewing it from the focusing tube of my telescope and screwing in the FR/FF. It left me with 728mm FL @ f 5.8.

It seems odd to me that your planned provider has chosen the 35” threshold as a cutoff point. Seems rather limiting, or a way to squeeze more funds from potential users. Do they provide a list of what fits within their 35” requirement? It must be a requirement to avoid collisions between customers equipment’s. “This is your lot size for our development.”

I believe you will be better off doing the SQA106, just for peace of mind you won’t get stuck with some other arbitrary charges in the future.

I “frog hopped” from my 86mm triplet to my 130mm. My only physical “requirement” was to avoid a block wall near my location. Which wasn’t a real problem at all. I did not need to move my mount.

I don’t see where you listed your imaging train length. That might alter your 35” length limitation. (Seems quite an arbitrary length requirement. We’ll put the piers 72” apart and impose a 35” length on the agreement).

I did find this: Frequently Asked Questions - Death Valley Observatories

So my suggestion would be to contact them about your specific concerns. My specific concerns would be response times to any problems that happen. Reality may differ from what appears to be promised.

They have been pretty reasonable about my choice and they are willing to work with me on the 130. I think thats what Im going to go with now that they are back in stock.

I’d bet you would love the 130 over the 106. To me, I like nebula, so I’m more interested in center objects. That was why I made such a big jump from my 80mm to my 130 when I leaped.

I’ve been really happy with my 130, but the bottom line is I successfully brought everything closer and bigger. And a few favorites too much so.

Make sure your mount is up to the weight. IE: my total load is~ 34 pounds, on my 50-pound Photographic Instrument rated GEM mount.

I like the cutting-edge stuff. But learned a long time ago to stay back enough that the parts and guts fly over me. Now, I’m just settled in and happy with my equipment, but not my control software. I don’t think I could be happy not being able to go wrestle with my demons and I don’t do waiting on somebody else to get out of their chair to do my baby sitting. When it works good, it’s bliss! When it doesn’t, it’s hell on Earth.

So I’ll stay close to my backyard, beer, and my bed. 🤣

Engaging Supportive
Rainer Ehlert avatar

Keep in mind that the biggest swing diameter is when the scope is in 45° position as far as I have found out. This would mean setting up a scope at 45° Latitude and pointing to the North (Home position) is the biggest diameter. If my calculation was correct 18 years ago when I built my 2 pier Observatory.

And keep in mind also that balancing will make one end longer depending on what you have hanging on it. My Takahashi TOA 130 is very front heavy for example.

📷 image.pngimage.png

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Rick Krejci avatar

When I asked DVO about flat panel lids, they indicated that the swing out type (I mentioned the wandererastro) vs the rotate sideways like the Depp Sky Dad OFP2’s, they said “it definitely needs to rotate sideways — otherwise the swing diameter increases significantly.”

Rick Krejci avatar

Wes Schwarz · Apr 12, 2026, 08:14 PM

I would prefer to use the bigger 130 but Im just not sure its going to work especially when I need to focus the scope.

I can ask them to just partially extend the dew shield by maybe 1"

What would be huge is if you can remove the manual rotator from the focuser of the SQA130 and retain the focuser itself.

That would shave a good bit off of the scope. Im sure the focuser itself will be fine for my setup.

Removing the rotator would do nothing to shorten the scope. The focus point is the focus point no matter what’s in the train. The focuser would just have to go out that same amount.

By the time you add the camera, 3” for cabling and add in the focus and account for RA center to farthest extent of scope or camera/cables, I really doubt that the 130 will fit in 35” . I would think it’s more getting in the upper 40s.

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