? Astronomy & Photography

NGC 224 - M31


Object: M31: galaxy in Andromeda 4.4m, 190'x60' type SAB(s)b

Subimages: 6 x 300s (0.5 hrs) SD Mask combined after dark calibration.
Scope: AT66ED, EFL=400mm (f/6 effective)
Mount: Paramount MME
Camera: Canon 350D (3.3"/pixel) at about -20C oriented at 90d25' (E up, N right)
Guiding: None
Acquisition and Processing: MaxIm DL/CCD v4.6 and v5
Imaged on: Dec 20, 2008

Processing:
Background flattened manually and DDP. Due to a combination of vignetting and light pollution the field still contains colors gradients. No effort at correct color calibration was carried out, the above image and the next one below were taken on consecutive nights and subject to the same minimal processing to evaluate the effectiveness of the Baader Multi Purpose Coma Corrector.


NGC 224 - M31 with Baader MPCC


Subimages: 6 x 300s (0.5 hrs) SD Mask combined after dark calibration.
Scope: AT66ED + Baader MPCC, EFL=400mm (f/6 effective)
Mount: Paramount MME
Camera: Canon 350D (3.3"/pixel) at about -20C oriented at 90d25' (E up, N right)
Guiding: None
Acquisition and Processing: MaxIm DL/CCD v4.6 and v5
Imaged on: Dec 21, 2008

Processing:
Background flattened manually and DDP