M35 & NGC 2158

Open Star Clusters in Gemini
image sizes:
1024 x 768
1392 x 1040


Optics Celestron 80ED @ f/6
Mount Losmandy G11 with Gemini
Camera Starlight Xpress SXV-H9
Filter Astronomik RGBIIc filters, IDAS LPR
Exposure RGB - ~60 min. ea. x 2 min. (1.2 : 1 : 1.3) Unbinned
Processing Acquired in AstroArt4,DDP. , final work in Photoshop CS3
Date 12/08/07
Location Elk Grove, CA
Notes Seeing and transparency average/Poor(5-6 FWHM) with wind.  60 lb. test fishing line used to give spikes.  First test of my new William Optics 0.8X Field Flattener/ Focal Reducer V.II.  It appears to have fixed the elongation at the edges of the frames, but I still see misalignment of the focuser on one half of the frame.  I need to collimate.