Thursday, December 30, 2010
M1, The Crab Nebula
I had a case of photon fever, and didn't get this quite as focused as it should have been. Not terribly different than the 2006 version, maybe better tracking. Even that wasn't great--I threw out half of the frames for trailing in RA. Not sure where that's coming from.
Second light with the AT6RC, and I'm very happy with the new scope so far. Very little vignetting and a nice flat field with the AT2FF in place.
Heritage Park Observatory, Cedar Park, TX
Exposure: 15 x 120 sec (30:00) @ ISO 1600, 10 flat, 10 dark
Camera: Canon Digital Rebel XT (350D) (stock)
Scope: AT6RC, AT2FF field flattener
Mount: Meade LXD 650
Guider: Zenithstar 66, Meade DSI
Software: Nebulosity, Photoshop