Quote:
Originally Posted by Satchmo
Stephen
Thanks for the report . You really need to test your mirror on stars as that will tell you something about your mirror. A quality 100 lpi grating at focus will give you even more detail about overall correction and zones. It is hard to tell anything much by looking at the Moon in between sharp and blurry at 5 X magnification per inch of aperture.
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Hi Mark,
Todays been spent getting my dob to give birth to a finder. Now its done. 4.5" f4.44 Skywatcher newt,(with GSO 20mm Superview 70deg ocular). Will spend tomorrow getting all optics lined up, and then I shall be able to sight up on a suitable star, for testing,(I do have a 133LPI Ronchi grating already instaled in an eyepiece), so will give a report at the earliest.
Stephen.
