We finally a clear night here in Northern Colorado, so I was able to use my new scope again!
I decided to shoot the Horsehead and Flame.
As I am still trying to figure out the best way to use my new RASA 11, I used two different cameras this time. I used a ZWO ASI183MC Pro for the RGB and a ZWO ASI183MM Pro for the H-Alpha. Instead of using a filterwheel, this time I used a 6nm 1.25" h-alpha filter with a ZWO adapter screwed inside the ZWO m42 extension which seemed to work very well. I had no vignetting at all and the 6nm filter seems to work well at f2.2.
Anyway, here is what I got with 3.1 hours total integration. This is the deepest I've ever imaged the Horsehead, lots of dust compared to my last try at this part of the sky. My normal imaging scope used for this was a Stellarvue SV80, which at f7, would have taken me 31 hours of integration to get what I got with just 3.1 hours with the RASA. I am LOVING this scope!
This one is best viewed on the Astrobin link below to see a more detailed view. (click on small square image, then on Astrobin click on the image again to get a full screen view)
125, 45 second RGB images at gain 54
60, 90 second H-Alpha images at gain 111
RASA 11
ZWO ASI183MM Pro
ZWO ASI183MC Pro
EQ6-R Pro
ZWO ASI290mm Mini Guide Scope
HorseHead-Final-Small by
Colo CJ, on Flickr
