M51 - The Great Whirlpool Galaxy
|Telescope||C-14 @ f11 on AP1200 mount|
|Camera||FLI Dream Machine, full resolution. -30c cooling|
|Exposure||16 exposures, 1 minutes each|
|Processing||Dark subtraction. 50 iterations RL deconvolution in Astroart|
|Other notes||Pretty good shot. Hand picked sharpest images. Steady seeing. 1.3 arc seconds/pixel. Need a good flat field correction to really extract the best data from this set.|
|Telescope||Aries 16" RC @ f16 on AP1200 mount|
|Camera||SBIG ST-10XME binned 3x3. Cooled to -20.|
|Exposure||5 exposures, 5 minutes each. Combined in MaximDL|
|Processing||Dark subtraction. 20 iterations Maximum Entropy deconvolution in MaxIm. Curve adjustment in Photoshop. Unsharp masking in Photoshop.|
|Other notes||First light testing f/16 optics on DSO.
Still working on getting system collimated properly.
Seeing was ok. Unbinned FWHM was about 7-8 pixels at this scale so I did a 3x3 bin to reduce the image scale to a reasonable level.
|Telescope||AP130EDT @ f8 on AP1200 mount|
|Camera||Starlight XPress HX-516|
|Processing||Drizzle processed in IRIS to double size and enhance resolution. Photoshop used for final contrast adjustment.|
|Other notes||This shot, while not the 'best', is a
demonstration of what can be accomplished with a small (5.1")
telescope. It is the highest resolution deep sky picture I have taken -
a feat when compared with those taken using the C-14.
The triangular stars are due to some lens pinch that I have been unable to resolve.
Description, coordinates, other photos