You are invited to compare with the
images recorded using Bellow-Cam MK1 and Bellow-Cam
MK2. Messier 44 and 45
give some impression about the benefits of longer exposures. Exposure
time was chosen to be 10s/frame in most cases.
Below images were converted to JPG for the sake of bandwidth, the image quality for these converions was set to 80% besides it is mentioned to be different in the figure caption.
M44, 50mm f/1.8
M45, 50mm f/1.8, 20s/frame
M42 & Co, 50mm f/1.8, gamma curve modified, histogram stretched
M42 & Co, 135mm f/3.5, gamma curve modified, histogram stretched
M36 region, 50mm f/1.8, image quality 90%
Cr 70, 28mm f/2.8
M48, no dark frame substraction, 50mm f/1.8, 90% JPG quality
M31 & M110, 50mm f/1.8 grey
Below images were converted to JPG for the sake of bandwidth, the image quality for these converions was set to 80% besides it is mentioned to be different in the figure caption.
M44, 50mm f/1.8
M45, 50mm f/1.8, 20s/frame
M42 & Co, 50mm f/1.8, gamma curve modified, histogram stretched
M42 & Co, 135mm f/3.5, gamma curve modified, histogram stretched
M36 region, 50mm f/1.8, image quality 90%
Cr 70, 28mm f/2.8
M48, no dark frame substraction, 50mm f/1.8, 90% JPG quality
M31 & M110, 50mm f/1.8 grey
last modified 28.03.04