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Old 11-01-2014, 11:33 AM
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tilbrook@rbe.ne (Justin Tilbrook)
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tilbrook@rbe.ne is offline
 
Join Date: Jun 2007
Location: Penwortham
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Hi Andrew,

Not bad for challenging conditions, moon and light pollution.

I think your coma corrector is already at the correct spacing 55mm. The type 1 baader is best at F/L of 4.5 to F/6.

Here's the blurb about the type 3, I think this applies to the type 1 too.

To get the best astrophotos with a DSLR camera, the Baader MPCC Mark III Multi-Purpose Coma Corrector is ideal. For imaging with digital SLR cameras, only the MPCC MkIII is needed - additional spacer rings are not required. (You WILL need a T-ring for your particular camera model, of course). The MPCC MkIII is designed for a nominal 55mm distance from the mounting flange to the camera sensor (55mm is the standard flange-to-sensor distance for most DSLR cameras, measured from the front of the T-ring to the image plane). For use with CCD cameras, you may need one or more T-thread extension or "spacer" rings to achieve the correct distance between the MPCC MkIII and the camera's imaging sensor. (Orion carries a T-thread Spacer Ring Kit, sold separately).

Here's a link to setup with a DSLR.
http://www.baader-planetarium.com/pdf/mpcc_e.pdf
My type 3 still produces a little coma.

Cheers,

Justin.
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