Looking for a filter to reduce star bloat/coma in Canon lenses of under 100mm focal length. Narrowed it down to Lumicon Minus Violet and Baader Fringe Killer....
surprised your having trouble with that, but it may be the digital factor. I never had problems with my vintage canon FD lenses, wide open, they were sharp as...
I currently have the baader fringe killer. It says if I add a Red filter + my Fringe Killer, it will create a "hydrogen alpha" filter. The problem is.. what...
... would ... Hi Jason, What they say is it will create a 70nm bandpass filter around H- Alpha at the world's lowest price. The red filter costs only EUR 25. ...
Hello : My name is Donna and I've been messing around with imaging for a little while now and would like to do better. I sometimes use a short tube 80 and...
... 72% ... Please try to read the reviews in Sky&Telescope April 2004. IMHO the best would be an interference filter (not dye) and I have just placed an order...
... would be ... Presumably any red or partly red nebula ;-) North America Nebula, Rosette, Orion, Lagoon etc. I assume that you are talking of visual use? My...
... I'll dig it out. ... The MV1 seems to kill violet more than the Baader, at least comparing the tables from http://www.siriusoptics.com/rightMV1.htm and ...
Yeah, it is a very expensive hobby! I never even dreamed I spend this much money on it! I also forgot to mention, that yes this would be for visual use. I...
Hello, I have a C8 at f/10 and an ST-9E. I use the Optec IFW, with their filters to make color CCD images. How do I know what ratios to use when combining the...
You can get help with exposure times for color here: www.astrodon.com Ron Wodaski The New CCD Astronomy http://www.newastro.com/ipb ... From: Elliott Brooks...
Hi , ... you can get all filters from astronomik in all sizes from 25mm up to 50mm diameter. Have a look at www.astronomik.com CS Gerd [Non-text portions of...
Hi, I noticed that Baader is offering a couple of new interesting filters. The first is a Venus filter (UV) and the other is an IR Pass filter. The UV is...
IMHO one should not chase IR-pass filters to improve on lunar/planetary resolution. The wavelength is twice that of yellow, consequently the diffraction limit...
Thier other new filter that looks interesting is the solar contiuum filter that enhances granulation and solar detail. Might be neat for WL filtered images...
Just a note on the physical appearance of the Baader UV and IR pass filters. I received my new Baader 1-1/4" UV (Venus) and IR pass filters today. The filters...
Hi Group, Just found this group and hoped you would not mind my joining in. I have just replaced the filters in my ST-2000XM with Don Goldmans filters. As I...
Look forward to you future impressions on them. Clear skies, Kevin ... pass ... seeing ... 10nm ... the ... <ssb73q@r...> ... interesting ... UV ... and ... ...
Hi Kevin, While just a subjective test on filters and the new Meade DSI I conducted an experiment were the results may find interest here. The DSI is a $300...
Hi Samir, The diffraction limit can be overcome by increasing aperture, unlike atmospheric seeing and chromatic refraction limitations. From where I observe...
Are you using a webcam? Only way to go these days, IMHO. At the last close approach of Mars I took a Hubble pic and simulated the diffraction-limited...
Hi Samir, Oh yes, I am definitely talking webcams - The fast frame rates make them difficult to beat for planets and rcent modification advances like raw mode...
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