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IC63 Geist der Kassiopeia by Dieter Marquardt

Telescopes using mirrors as the primary optical element.

Showing 1-50 of 240

	Replies	Views	Created
Artesky Artec 300 E F/4.5 Newtonian astrograph user experiences wanted Equipment Filter Wheel Focuser +5 Aleix Roig	0	79	1 day ago
Spikes are not centered Reflectors Artifacts Coma +2 Rainer EhlertFrequent contributor Last post: Rainer Ehlert	3	79	3 days ago
Suggestions please for best budget software to connect my mixed bag of Hardware Sky-Watcher Star Adventurer GTi CMOS Equatorial Mount +7 Richard JonesNew contributor Last post: bigCatAstro	15	188	3 days ago
Need help diagnosing distortions Apertura 8" f/4 Imaging Newtonian Reflectors Collimation +2 N PattenNew contributor Last post: V	2	99	5 days ago
Happy with this scope? Reflectors Ritchey-Chrétien Portable Setup +1 bobtobb Last post: Craig Towell	3	216	16 days ago
Help with RH200 halos/reflections Officina Stellare RH200 MKII AT Reflectors Artifacts +2 Jose Mtanous Last post: Rainer Ehlert	16	322	23 days ago
Celestron C8 Equipment Flattener Reflectors +2 Rainer EhlertFrequent contributor Last post: andrea tasselli	1	50	Dec 1, 2025
One dew solution that may not be for everyone. Dew Heater Equipment Reflectors +4 noon Last post: noon	9	236	Nov 28, 2025
how to collimate skywatcher explorer 130p Sky-Watcher Explorer 130P Equipment Reflectors +1 Nikolaos Bafitis Last post: Erlend Langsrud	7	140	Nov 22, 2025
Secondary mirror coating issue or possible light leak problem? Equipment Reflectors Help Needed +1 Anthony Grillo Last post: andrea tasselli	7	115	Nov 3, 2025
StellaLyra 6" F/4 - Looking for Owner Feedback StellaLyra 6" f/4 M-LRN Newtonian Reflector Reflectors Portable Setup +1 lunohodov	0	75	Oct 29, 2025
Rare Visual Neptune observation from New Delhi verified by ALPO researchers Reflectors Acquisition Light Pollution +8 Rishabh Sagar	0	94	Oct 23, 2025
ONTC Tube Foam Sandwich Compression and Solution TS-Optics 250mm/10" ONTC f/4 Newtonian (carbon tube)Equipment Reflectors +1 Jon Main Last post: Tony Gondola	3	123	Oct 22, 2025
Nebulosa velo Est ZWO ASI294MC Optolong L-eNhance ZWO ASI385MC +7 e.ferriani Last post: e.ferriani	4	45	Oct 21, 2025
Screwing or not screwing the coma corrector to the newton focuser that's the question Equipment Focuser Reflectors +1 Frédéric Ruciak Last post: John Tucker	12	232	Oct 12, 2025
Starspikes reduction Equipment Reflectors Optics +1 Lalo Juarez Last post: Alex Nicholas	2	53	Oct 11, 2025
Help with skywave models Reflectors Collimation Help Needed +1 Anthony Grillo Last post: Gaston Baudat	2	57	Oct 8, 2025
Hairy Stars Equipment Reflectors Optics +3 Tony GondolaFrequent contributor Last post: Tony Gondola	27	451	Sep 7, 2025
Another weird cdk star halo issue! Reflectors Optics Help Needed +1 Anthony Grillo Last post: Anthony Grillo	15	227	Sep 5, 2025
OCAL 3.0 pro max VS OCAL 4.0 Reflectors Buying Advice Collimation +1 Gabriel Last post: c_future	8	333	Aug 29, 2025
Diffraction Pattern Question Reflectors Advanced Collimation +3 Josh Jones Last post: andrea tasselli	7	213	Aug 27, 2025
Is something wrong with my reflector? Omegon ProNewton N 153/900 Reflectors Help Needed Slavic Dragovtev Last post: andrea tasselli	11	464	Aug 19, 2025
Optimized Newtonian - Is it worth it? Equipment Reflectors Help Needed +1 Tony GondolaFrequent contributor Last post: Read noise Astrophotography	20	828	Jul 28, 2025
Replacement focuser Equipment Focuser Reflectors Tony GondolaFrequent contributor Last post: Tony Gondola	10	252	Jul 17, 2025
Setup with 8 or 10 inch Newton? Avalon Instruments M-uno Harmonic Mount Reflectors Tobiasz Last post: Aris Pope	12	514	Jul 12, 2025
New Newtonian Telescope From China Equipment Reflectors Review Stephen Shen Last post: Craig Towell	31	2.1k	Jul 7, 2025
Which newton scope for observatory Equipment Reflectors Buying Advice Vandewattyne Last post: Mau_Bard	21	542	Jul 4, 2025
Extender for Skywatcher 250p Sky-Watcher Quattro 250P / 10-S Equipment Reflectors Lalo Juarez Last post: Michael von Berner-Purgstall	7	205	Jun 29, 2025
3" Focuser Support for Orion 8" Reflector Equipment Focuser Reflectors texasastrophotography Last post: texasastrophotography	15	260	Jun 3, 2025
Contemplating a Carbonstar 150 Apertura CarbonStar 150 Imaging Newtonian ZWO ASI533MC Pro Reflectors +2 Phil Creed Last post: ScottF	19	877	May 20, 2025
Polvere e sporco sullo Specchio primario! Skywatcher Newton 10" 250/1000 mm, Sky-Watcher Quattro 250P / 10-S Reflectors Cleaning Luigi Ferrari Last post: andrea tasselli	4	108	May 15, 2025
Light Leaks Reflectors Acquisition Light Pollution +1 andrea tasselliFrequent contributor	0	159	May 10, 2025
My move from refractors to newtonians Equipment Refractors Reflectors Philippe Barraud Last post: Antonio Parisi	7	562	Apr 27, 2025
Moving a crated CDK14 Planewave CDK14 Equipment Reflectors jego Last post: Kevin Morefield	7	210	Apr 22, 2025
Schmidt Cassegrain Telescope Imaging Southern Maine Astronomers Reflectors Brett Joslin Last post: Dean Ostergaard	14	89	Apr 12, 2025
How easy would this app be to develop? Reflectors Collimation Coma Craig Towell Last post: Tony Gondola	6	281	Apr 3, 2025
Dealing with Dew - Takahashi Epsilon Takahashi Epsilon-180ED Dew Heater Reflectors Deepan Vishal Last post: daywalker	15	338	Mar 24, 2025
M40 Messier Objects Reflectors LRGB Harald Becher Last post: Gaillard Jérôme	1	101	Mar 11, 2025
TS GPU Ghosts/Reflections? TS-Optics NEWTON Coma Corrector 1.0x (TSGPU)Canon EOS 700D / Rebel T5i / Kiss X7i Sky-Watcher Explorer 150PDS +2 John Walsh Last post: John Walsh	9	251	Mar 8, 2025
Standard SCT back focus Reflectors Acquisition Optics +1 Tony GondolaFrequent contributor Last post: Himanshu Pandey	5	111	Mar 3, 2025
Operazione di "defork" del Meade 2080 8" Meade Model 2080 8" f/10 SCT Equatorial Mount Reflectors Biagio De Simone Last post: Biagio De Simone	5	107	Mar 2, 2025
In Search of Full-Frame capable Coma Corrector for Newtonians Equipment Reflectors DIY Charles HagenIOTD Staff Last post: andrea tasselli	2	133	Feb 23, 2025
Upgrading a 20 year old 8" F/2.6 astrograph Reflectors DIY Off-topic Dave Erickson	0	327	Feb 14, 2025
Tips for Sky-Watcher Starlux 190MN / BK 190MN DS Sky-Watcher Starlux 190MN / BK 190MN DS Reflectors Collimation pessorrusso Last post: Craig Dixon	12	559	Feb 13, 2025
Aperture obstructions and light transmission. Reflectors Acquisition Optics +1 ScottF Last post: Tony Gondola	10	157	Jan 31, 2025
Bobs Knobs for my Quattro 250P Sky-Watcher Quattro 250P / 10-S Equipment Reflectors +1 Eric Jeziorczak Last post: Joel Lee	3	82	Jan 29, 2025
CDK14 vs. CDK17 Planewave CDK17 Planewave CDK14 Reflectors +1 Still_Cloudy Last post: Dark Matters Astrophotography	33	1.8k	Jan 27, 2025
Is it worth upgrading to a SW quattro 150? Sky-Watcher Quattro 150P Reflectors Buying Advice Menelaos Last post: Tony Gondola	4	445	Jan 27, 2025
TS/GSO PHOTON Focuser TS-Optics PHOTON 150mm/6" f/4 Newtonian QHYCCD QHY268 M Refractors +2 NAG Last post: Tony Gondola	2	146	Jan 7, 2025
Forgetting to put marks when cleaning the main mirror Reflectors Cleaning Morian Last post: Morian	3	176	Dec 18, 2024

Showing 1-50 of 240