vkastronomy.com - Astrophotography Weblog
The Double Cluster
17:40 18/10/2006 UTC
< Previous Next >I had a short window of opportunity for imaging and I thought I image Double Cluster with my new scope. As in last time when I imaged this, polar alignment was way off again. I could only do 90s subs because excess drifting. Short exposures ain't so bad with this target so I decided not to fix the alignment.
NGC/IC Object List:
NGC869 open cluster RA:02h19m03.7 Dec:+57°08m'06" BMag: , OCL 350 H Persei, Double Cluster
NGC884 open cluster RA:02h22m32.0 Dec:+57°08m'39" BMag: , OCL 353 Chi Persei, Double Cluster
[High Resolution : 1600x1200 696kB]
Camera: Modified Canon EOS 350D (Rebel XT) | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Orion Skyview Pro, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Baader IR/UV block | Guiding: Orion ShortTube 80mm f5 refractor, QCGuider, Teleskop-Service 1.5x Barlow, Phillips ToUCam Pro II webcam | Exposure: 30x90s (45m) ISO800 f6, 5 darks, 10 flats, bias | Software: IRIS, GIMP | Location: 60°31'N 26°52'E (Koivula/Kotka,FI) | Target altitude in the beginning of the exposure 52°
Average Rating 4.00 (2 total votes)
Added: 04:31 19/10/2006 UTC
![[High Resolution : 1600x1200 696kB]](images/doublecluster-2006.10.18-17h40m-high.jpg){kind=link}