Well, here's first semi-proper light for my FSQ-106N.
My STL has a broken filter wheel and is on its way to Peter Ward to hopefully get fixed. So, I used the 5D Mark II instead. I was really hoping to go ape on Rho Ophiuchus. It's my favourite part of the sky and I've been desperate to re-image it after my other DSLR attempt from several years ago. As the camera's not modified and therefore insensitive to hydrogen alpha, I spent the weekend chasing down dark nebulae and reflection nebulae.
This composition marks the longest cumulative exposure that I've done to date on a DSLR, 4 hours and 30 minutes. I know this is small fry when it comes to multi-hour LRGB marathon sessions, but, I think it's a pretty decent effort for a DSLR.
One of the things that caught me off guard was that I only needed to expose for 300 seconds before starting to reach saturation on bright stars. This is no doubt a result of imaging at f/5 instead of the f/7.5 that I got used to on the ED127. About a stop faster, and therefore, no need for 10-minute exposures on a one-shot colour device.
Anyways, hope you like it. Lynchings, bashings, comments, and critique is, as always, most welcome.
Normal resolution available
here.
Thank you for looking.
H