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"Sailing Through Cassiopeia" - The Sailboat Cluster (NGC225) - L'amas du Voilier by Alban Lechatellier

The 110 bright deep sky objects cataloged by Charles Messier.

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	Replies	Views	Created
I built a free tool to generate Messier & Caldwell catalogs posters Acquisition Deep Sky Messier Objects +1 Sylvain Villet Last post: CVZ_Astro	5	282	21 days ago
Continuum subtraction in nebulas Pleiades Astrophoto PixInsight Processing Nebula +2 THIAGO GILBERTO DO PRADO Last post: THIAGO GILBERTO DO PRADO	3	180	Jul 24, 2025
EAF Settings Celestron EdgeHD 8"M27 Messier Objects +2 AstroDarks Last post: AstroDarks	7	424	Jul 21, 2025
RCC: Please critique my dumbbell nebula (I’m new to mono imaging). SHO Request for feedback M27 +2 Tommy Mastro Last post: Tommy Mastro	27	867	Jul 14, 2025
C11 Unexpected Diffraction Spikes Celestron C11 SC XLT M57 Troubleshooting +2 Jeramie Last post: Jeramie	29	580	Jul 7, 2025
Plate solving problem Processing Deep Sky M17 +2 ed bat Last post: andrea tasselli	4	100	Jun 26, 2025
Has anyone ever… M101 Supernova Messier Objects +2 Daniel Cimbora Last post: Michael Stolz	17	765	Jun 16, 2025
Combining OSC data with dual narrowband data Pleiades Astrophoto PixInsight NGC5194 M51 +2 erik102696 Last post: andrea tasselli	5	150	Jun 10, 2025
PhotometricContinuumSubtraction Pleiades Astrophoto PixInsight M33 NGC598 +2 xiaodong zou Last post: xiaodong zou	21	1.4k	May 5, 2025
Edge hd imaging issues Celestron EdgeHD 8"Gradient Removal NGC3034 +2 Dan Last post: TiffsAndAstro	25	1.1k	Apr 19, 2025
Applying BXT as final step in processing Processing Deep Sky M97 +1 Michael J. Mangieri Last post: Kyle Goodwin	27	846	Apr 10, 2025
M63--What is this? Acquisition Deep Sky M63 +2 Jerry GerberFrequent contributor Last post: andrea tasselli	5	238	Apr 8, 2025
Strange Flats for the first time with Lacerta flat box any idea? Processing Deep Sky M104 +1 Frédéric Ruciak Last post: Frédéric Ruciak	12	344	Apr 8, 2025
Imaging M63 During Moonlight Acquisition Deep Sky M63 +2 Jerry GerberFrequent contributor Last post: andrea tasselli	1	80	Apr 7, 2025
Is an 8" Edge HD worth it for me? Equipment Buying Advice M8 +2 Brian Last post: Miguel A.	17	574	Mar 22, 2025
Problems generating HDR images in PixInsight Processing Deep Sky M42 +1 Enrique Ojeda Last post: ArchStarGazer	3	156	Mar 12, 2025
[RCC] M42 in RGB Request for feedback M42 Messier Objects +2 Jason Livingston Last post: Jason Livingston	10	157	Mar 10, 2025
M51: Ideas for the fuzziness Request for feedback M51 Help Needed +2 Vineet Panwalkar Last post: Francesco Meschia	10	495	Mar 7, 2025
Need help or tutorial for M57 (or similar PNs like cat's eye) processing Processing Deep Sky M57 +2 YingtianZZZ Last post: YingtianZZZ	21	628	Mar 3, 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
Nikon D700 - Red Banding on Bright Object - Stacking ? Nikon D700 M42 Banding +2 Ian Coopland Last post: Ian Coopland	4	116	Feb 14, 2025
M33 in L(Ha+R)GB - processing in GIMP (for the Real Intelligence Challenge) Processing Deep Sky M33 +2 Piotr K. Last post: Oscar	4	354	Feb 11, 2025
Change in guiding after the meridian flip Stark Labs PHD Guiding Meridian Flip M81 +2 Tony Barlow Last post: Tony Gondola	6	244	Jan 27, 2025
Processing M42 in GIMP - a complete workflow :) Processing Deep Sky M42 +2 Piotr K.	0	200	Jan 23, 2025
A Tribute to Orion M42 Emission Nebula Messier Objects +2 LookSpaceThings Last post: LookSpaceThings	2	286	Jan 19, 2025
How can you solve this? No DSO In The Stacked Image Processing Deep Sky M101 +2 Szijártó Áron Last post: Tony Gondola	10	585	Jan 12, 2025
M33. Should there be any green in the image at all? Processing Deep Sky M33 +2 Tim Hawkes Last post: Tim Hawkes	14	642	Jan 7, 2025
Multiple WBPP stacked .xisf's Processing Deep Sky M42 +1 TDAbbotts Last post: TDAbbotts	6	206	Jan 4, 2025
Focusing with the Sii Filter Acquisition Deep Sky M78 +2 Jerry GerberFrequent contributor Last post: Alex Nicholas	6	267	Dec 18, 2024
Looking to collaborate on M74 Stellar Collaborations NGC628 M74 Messier Objects +2 Ivan Raichev Last post: Curtis2010	7	136	Nov 17, 2024
Eagle nebula processing request Processing Deep Sky M16 +1 tantalusthief Last post: Oscar	19	712	Nov 3, 2024
Newbie requesting a little help Rokinon 135mm f/2.0 ED UMC M45 Messier Objects +2 Johnathan Allison Last post: Johnathan Allison	3	149	Nov 2, 2024
m45 processing request. Processing Deep Sky M45 +1 tantalusthief Last post: Dean Linic	13	422	Oct 30, 2024
[RCC] M45 Stretching Request for feedback M45 +1 Brion Pellarin Last post: Daniel Carter	21	459	Oct 29, 2024
siril andromeda processing taken with iphone Siril Team Siril M31 Galaxy +2 Nikolaos Bafitis Last post: Nikolaos Bafitis	13	271	Oct 26, 2024
[RCC] Andromeda Galaxy Request for feedback M31 Galaxy +2 akshay87kumar Last post: Tony Gondola	12	429	Oct 25, 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
M33 and StarXterminator Processing Deep Sky M33 +2 Blaine Gibby Last post: NeilM	14	621	Oct 9, 2024
How do I reduce misty glow around stars? Processing Deep Sky M34 +2 Piers Palmer Last post: Oskari Nikkinen	12	428	Oct 4, 2024
Anomaly in the Lagoon Nebula Sh2-25 Artifacts Messier Objects gfunkernator Last post: Tony Gondola	3	278	Sep 5, 2024
My first Andromeda Galaxy project Processing Deep Sky M31 +2 Matan Buzaglo Last post: Thomas Groh	9	386	Sep 4, 2024
WBPP - Plate Solving with Bad Data Pleiades Astrophoto PixInsight M15 Messier Objects +2 Jean-David Gadina Last post: Christian Großmann	13	178	Aug 28, 2024
First mosaic, all at once or per night? Pleiades Astrophoto PixInsight Mosaic M31 +2 Daniel Renner Last post: Tony Gondola	7	185	Aug 25, 2024
M31 Mosaic processing help Pleiades Astrophoto PixInsight Mosaic M31 +2 Alonso Uribe Last post: Michael Jarvis	7	287	Aug 24, 2024
M16/M17 and M31 were my very first DSOs Very First Images M16 M17 M31 +2 Nick Large Last post: Ian Dixon	1	32	Aug 22, 2024
Discussion about the current problems with AI-assisted star removal with StarX/Starnet Processing Deep Sky M31 +2 Jackson Datkuliak Last post: Jonathan H	7	366	Aug 18, 2024
Green stars...!? Processing Deep Sky M4 +2 Willem Jan Drijfhout Last post: Willem Jan Drijfhout	13	536	Jul 26, 2024
FIT Filename in NINA Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)M13 Messier Objects +2 Jerry GerberFrequent contributor Last post: Jerry Gerber	4	93	Jul 18, 2024
Mount stops tracking around 23 degrees altitude 10Micron GM1000 HPS Equatorial Mount M20 +2 Jerry GerberFrequent contributor Last post: Jerry Gerber	2	117	Jul 14, 2024
FOCUS ZWO ASI585MC Pro Equipment M16 +2 Orfanidisharis Last post: Orfanidisharis	28	366	Jul 9, 2024

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