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C/2025 A6 Lemmon from Bortle 6 - 29 September 2025 by Valerio Pardi

Gas clouds glowing from ionization by nearby stars.

Showing 1-50 of 129

	Replies	Views	Created
Is there a name for Sh2-204? Deep Sky Emission Nebula Help Needed +2 pmneo Last post: Marco Montella	6	264	2 days ago
"Emissionless" Processing - Advanced Technique for Isolating Emission and Continuum Components Processing Advanced Deep Sky +2 Mikołaj Wadowski	0	103	Aug 22, 2025
Sadr edditing problem Acquisition Monochrome SHO +3 D. Jung Last post: D. Jung	10	308	Aug 19, 2025
When do you give up on Oiii or Sii in narrowband imaging? Acquisition Narrowband H-alpha +2 Tony GondolaFrequent contributor Last post: Jan Erik Vallestad	9	467	Jul 31, 2025
2022 vs. 2025 processing improvement in PixInsight Pleiades Astrophoto PixInsight Processing Deep Sky +1 Christophe Perroud Last post: GregsAstrobin	5	626	Jul 6, 2025
[RCC] NGC688 area Pleiades Astrophoto PixInsight Narrowband Request for feedback +1 Dirk Bausch Last post: Georg N. Nyman	10	467	Jun 22, 2025
[RCC] M42 in RGB Request for feedback M42 Messier Objects +2 Jason Livingston Last post: Jason Livingston	10	157	Mar 10, 2025
[RCC] First picture of the orion nebula Nikon D5300 Request for feedback M42 +2 Rakeen Last post: James Markgraf	12	687	Feb 22, 2025
Struggling with very dim targets ZWO ASI183MM Pro Acquisition Narrowband +2 Craig Dixon Last post: kvastronomer	17	664	Feb 17, 2025
[RCC] Seagull Nebula Optolong L-eXtreme ZWO ASI294MC Pro Request for feedback +1 akshay87kumar	0	107	Jan 26, 2025
A Tribute to Orion M42 Emission Nebula Messier Objects +2 LookSpaceThings Last post: LookSpaceThings	2	286	Jan 19, 2025
[RCC] RCW 33 and Gum 15 Pleiades Astrophoto PixInsight Request for feedback Emission Nebula Emmanuel Valin Last post: Emmanuel Valin	5	289	Jan 16, 2025
First Light William Optics Cat 91 William Optics RedCat 91 WIFD Emission Nebula IC Objects Stefan Kellner Last post: Stefan Kellner	14	817	Jan 5, 2025
Can someone tell me, what is this moving star? Comet? Planetoid? James Webb? Deep Sky Emission Nebula Mikulas Turcsanyi Last post: Mikulas Turcsanyi	5	382	Dec 21, 2024
[RCC] Rosette Nebula Steffen Hirtle GraXpert HOO Request for feedback +1 akshay87kumar Last post: Tim Ray	6	486	Dec 15, 2024
[RCC] Orion Nebula Request for feedback Emission Nebula akshay87kumar Last post: Curtis2010	8	584	Nov 10, 2024
Elephant Trunk Nebula (Woman Contemplates Universe Nebula) Off-topic Emission Nebula IC Objects Steve Greaves Last post: Paul Lloyd	10	597	Nov 8, 2024
Failed to plate solve the Orion Nebula heart at long FL ZWO ASIAIR Plus Plate Solving M42 +2 Rostokko Last post: Stephen Jones	5	256	Oct 21, 2024
[RCC] Veil Nebula Pleiades Astrophoto PixInsight Nikita Misiura StarNet Request for feedback +1 akshay87kumar Last post: D. Jung	3	215	Oct 20, 2024
A basic science question about emission nebulae --Pelican, North American etc. Narrowband Off-topic Emission Nebula Tim Hawkes Last post: Tim Hawkes	12	622	Sep 20, 2024
Help Requested on Crescent Nebula Request for feedback Emission Nebula Andrew Topper Last post: Brian Diaz	13	378	Aug 10, 2024
Objective Way To Tell If I Have Enough Signal In My Single Exposures Optolong L-eXtreme Acquisition Deep Sky +1 Benjamin DeHaven Last post: Keith Mombourquette	3	234	Aug 6, 2024
Silk Nebula Discovered by Enthusiast Astronomers with QHY600M and QHY1920M Cameras OIII Narrowband H-alpha +1 Yilia Yu Last post: Yilia Yu	5	854	Jul 12, 2024
Greeting from Sweden Introductions M17 NGC6888 +1 Esmaeil Last post: Esmaeil	4	84	Jun 19, 2024
My first image with Starizona HyperStar 11 was an EAPOD Starizona HyperStar 11 v4 (HS4-C11)H-alpha Emission Nebula Sandu Val Cosmin Last post: Sandu Val Cosmin	11	593	May 15, 2024
Sh2-23 and Sh2-24 Sharpless2 Objects Sh2-23 Sharpless Catalog Sh2-33 +2 Maciej Last post: Jerry Yesavage	3	175	May 13, 2024
Photography of nebulae Sony Cybershot DSC-HX200V Beginner Emission Nebula +1 Juri Last post: Brian Hayward	5	378	Apr 19, 2024
[RCC] 3x2 panels mosaic of the Rosette Nebula Pleiades Astrophoto PixInsight Optolong L-Ultimate Mosaic +2 patrice_so Last post: patrice_so	7	377	Mar 18, 2024
[RCC] M42 Orion Nebula Request for feedback M42 Messier Objects +1 Richard Gifford Last post: andrea tasselli	1	130	Mar 11, 2024
How to get rid of Alnitaks blodge? Processing Deep Sky Emission Nebula +1 Arny Last post: patrice_so	12	418	Feb 29, 2024
Seestar S50 - Realistically? ZWO Seestar S50 M42 Messier Objects +2 Mike H - Sky View Observatory Last post: Corpus_Frisky	70	4.8k	Feb 26, 2024
[RCC] Orion Nebula - M42 Request for feedback M42 Messier Objects +2 Lukas Bauer Last post: Chris	7	592	Jan 22, 2024
Stacking methods Luc Coiffier DeepSkyStacker (DSS)Processing Stacking +2 Peyton Lorimor Last post: Nick Grundy	2	165	Jan 11, 2024
Oiii emission near the Flaming Star Nebula Optolong L-eNhance Optolong UV/IR cut HOO +1 Daniele Borsari Last post: Brian Puhl	4	258	Jan 10, 2024
Cause of this star flare artifacts. Alnitak's fault?? Sky-Watcher Evostar 72ED Canon EOS 2000D Acquisition +2 FilippoTib Last post: FilippoTib	13	303	Jan 10, 2024
Cause of this artifact and any ideas for mitigating it during acquisition or processing. Steffen Hirtle GraXpert Processing Deep Sky +2 John Stephens Last post: andrea tasselli	6	385	Jan 10, 2024
The Witch Nebula Nightmare William Optics Redcat 51 Sky-Watcher EQ6-R Pro IC Objects +1 LookSpaceThings Last post: Coolhandjo	4	325	Dec 28, 2023
New Astrophoto Team : Team OURANOS ZWO ASI2600MM Pro Introductions Sh2-106 +2 Team OURANOS	0	132	Dec 13, 2023
Pacman Nebula The OSC Club (One Shot Camera) ZWO ASI2600MC Pro One-Shot Color Emission Nebula Jerry GerberFrequent contributor Last post: Jerry Gerber	10	292	Dec 11, 2023
Sh2-264 Angelfish Nebula 135 MM SHO Observations and Critique Welcome Constructive Critique Requested Steffen Hirtle GraXpert SHO Sh2-264 +2 Brandon TackettIOTD Staff	0	77	Dec 8, 2023
Is Starlink Ruining Your Astrophotography Experience? Satellite M42 Messier Objects +2 Norman Tajudin Last post: Scott Badger	46	1.6k	Dec 6, 2023
First light with new setup including Mono-Camera and ZWO AM5! Wow, what a difference!! Sky-Watcher Esprit 100ED First Telescope Off-topic +2 Dcolam Last post: Dcolam	21	1k	Nov 30, 2023
New from Ontario Canada. iOptron SkyGuider Pro Introductions M42 +1 Zombiesniper Last post: Zombiesniper	13	325	Nov 18, 2023
Is this a diffraction spike? Acquisition Deep Sky M42 +1 Menelaos Last post: Alejandro Navarro	19	788	Nov 4, 2023
Free Orion Nebula Data (No longer valid) Acquisition Deep Sky M42 +2 Dark Matters Astrophotography Last post: Dark Matters Astrophotography	46	3.7k	Oct 28, 2023
Nebula Color with OSC (ZWO ASI2600MC) ZWO ASI2600MC Pro Optolong L-Ultimate Optolong L-eNhance +2 Jerry GerberFrequent contributor Last post: Janez Skubic	14	1.2k	Oct 20, 2023
Best way to combine RGB and dual narrowband data Optolong L-eNhance Processing Duo-Narrowband +2 Daniele Borsari Last post: andrea tasselli	4	549	Oct 15, 2023
[RCC] Heart nebula. First time looking for feedback! Pleiades Astrophoto PixInsight Processing Request for feedback +1 Ethan Pearson Last post: Ethan Pearson	3	440	Oct 9, 2023
Diffuse gas/illumination Pleiades Astrophoto PixInsight Narrowband IC Objects +1 Entropy Last post: Pierre Fleurant	23	1.5k	Oct 7, 2023
Mix results after using star removal Processing Deep Sky M42 +1 LookSpaceThings Last post: Renioo	2	146	Sep 23, 2023

Showing 1-50 of 129