My PixInsight Tutorial
Pointer to Other Useful Threads of Mine
Stellarvue SVR90T w/ SFF7 flattner
Celestron EdgeHD 800
Losmandy G11 / Gemini-II w/ opwb
Quote:I've been using my cameras as a companion for my visual observing for many years. The key to mimicking the visual appearance is to go easy on the processing. Make adjustments to brightness (levels) only. No non-linear processes at all; no contrast adjustments, curves, midtones, or gamma. If you adjust the brightness carefully you can use just about any exposure, but generally I've found exposures in the 10-20 second range work very well. This can be a lot of fun and unprocessed source images make the absolute best finder charts.
Orion XT8i Dob
9x50 RACI Finder TELRAD Reflex Sight
Agena SWA 38mm 70 FOV 2" EP
Orion 25+10mm Sirius Plossl 52 FOV EP
ES 82* 11mm, 18mm 2" ES 68* 24mm
6mm, 25mm Ortho. EP
Televue 3X Barlow
Filters Baader Continuum, UV/IF cut, Lumicon UHC, DGM OIII.
SkySafari T-Ring and Adaptor for Olympus E-510 Oly sz-14 SteadyPix Deluxe iOptron SkyTracker 7.7lb Electro Dot Sight RD400X
Quote:I tried this with my last attempt at M42. This would be about the equivalent view through an 8" SCT with a 16mm eyepiece. I took the image with a 65mm refractor and did a very mild stretch (the data was a combination of several exposure lengths). I tried to make it match what I saw the last time I looked through the scope. I've got a monochrome ccd so I gave it a slight blue hue to match my perception.Regards,David
Warren - Stargazing since the 60's! Scopes: ETX-LS6, ED80T, AT6RC, Lunt LS60T, C9.25 Mounts: Atlas EQ-G, Vixen Portamount II Cameras: Atik 314L+,DMK31AU03,SSAG, ASI120MC Filters: Astrodon LRGB, Orion HA, SII, OIII Acc: Orion 5 place Filter wheels x 2, Flatman Primary Imaging site: Bortle Scale Class 6 Red Zone http://astrobin.com/users/rigel123/
Quote:Warren, that's really interesting. I was at a fairly light polluted area last time I viewed M42 and I wonder if that has an effect on how I perceived the color, or if it is something biological. I'm partially red/green color blind (it's not severe enough to legally prevent me from driving), I wonder if there is something going on there.Regards,David
Quote:Quote:Warren, that's really interesting. I was at a fairly light polluted area last time I viewed M42 and I wonder if that has an effect on how I perceived the color, or if it is something biological. I'm partially red/green color blind (it's not severe enough to legally prevent me from driving), I wonder if there is something going on there.Regards,David When you are looking at grayish/green/blue objects I think it is all subjective!