Sh2-155 Cave Nebula

Constellation: Cepheus        Distance: 2900 lightyear

cave nebula

Image spcefications:
Exposure: 120 minutes (12 x 10 minutes) on 1600 ISO, RAW format
Camera: Modified Canon 40D in coldbox
Telescope: TEC 140
Mount: Losmandy G11
Guiding: Vixen ED102SS and SBIG ST-4
Image processing: ImagesPlus, Photoshop CS3, NoiseNinja
Location: Wateren, Netherlands
Sky Quality Meter: 21.06
Temperature: Ambient: 10° C / In coldbox: -2° C
Date: 18 september 2009
Higher resolution 2000 x 1327