ROR Observatory Levenhuk 8" carbon fiber RC, Astro Physics CCDT67 Astro-Tech AT8IN w/Moonlite, Baader Mark III MPCC Levenhuk 80mm triplet, Astro Tech 0.8X reducer/flattener Celestron CGEM DX w/HyperTune STF-8300M SX 7 position 36mm CFW Astrodon 5nm H-alpha Little Piney Observatory
Quote:Hi!If you dedicate your dslr for astroimaging, don't go for a mod. Instead, go for a full spectrum defiltering. And add the filter (CLS, Ir Cut...) you need in front of your coma corrector.If you want to keep your dslr for daylight and astroimaging, an Astrodon mod would be great. The Baader is just a change of the "blue" filter (Ir absorb) by a clear glass to restore the light path.
Quote:This is about the Baader UV/IR from Garys website....Baader UV/IR filter: The Baader UV/IR filter replacement is a much milder UV-IR-Cut filter than the original Canon IR Cut filter and it allows the H-Alpha wavelength to pass for deep sky. It also blocks higher infrared wavelengths that cause poor focus and bloated stars with refractor telescopes and camera lenses. Because the Baader replacement filter is the same thickness as the original Canon IR cut filter, the camera's autofocus feature and optical viewfinder will continue to work as in the original un-modified camera.
Will it work just as well for me as the Full Spectrum mod? I dont care anything about taking infrared daytime pictures.
Gary Honis DSLR Modification Service
Quote:Hi Gary,......I wonder if they would swap my "vintage" one for a new one Brent
Quote:Hi!I found back the spectral curves of the 40D/400D/1000D series DSLR with associated Astrodon and Baader filters.Spectrums of the LPF#1, Astrodon and Baader filters (for 40D/400D/1000D DSLRs) have been measured for Astreos by Alphanov with an Oceanoptics HR4400 CG UVNIR spectrometer. I don't know the exact ref of the Baader BCF filter tested (whether it is an early or late one), but from the filter curves, I guess it should be an early one. The late one should show a curve close to the Astrodon curve... but still very very close to what we get by just using the LPF#1 filter alone.As you can see, the difference is minimal (less than 0.5% in Ir) on the 3 configurations : LPF#1 alone, LPF#1+Astrodon or LPF#1+Baader. The difference is in the range 690-710 nm and is very minor : this is probably what Gary is demonstrating on his Ir LEDs photo test.By modding your DSLR, you will capture 3x more Ha compared to the unmodded DSLR.Fred
Brent Oliver 1 Loving Wife, one adorable son(came 13 days early!), and 3 dogs! HyperCams&MODS BLOG My Gallery
Quote:I couldn’t be happier. I've only imaged with my AT65EDQ apo so far and I'm getting some serious star bloating but I figure that something I need to learn to fix in my processing.
Quote:Quote:I couldn’t be happier. I've only imaged with my AT65EDQ apo so far and I'm getting some serious star bloating but I figure that something I need to learn to fix in my processing."couldn’t be happier" and "serious star bloating" don't go together
Quote:Was kidding...nothing against Gary or you. Thx