My mirrors are currently off with Palmway optical getting a re-coat after they were long ago stuffed in the same process by someone who charged me way too much and stuffed the primary right up, then, apparently died before I could do a darn thing about it. That was before GSO primary mirrors were available in the country. I've not even mounted the 8" after getting the primary back totally stuffed up.
Though now with COVID and everything else the 8" f5 mirror that was $220 when I didn't have the finances is currently only $120 cheaper new than the entire OTA. NO way I was going to pay that.
Wayne at Palmway said he'd look after me and it's a coating that will last my life out.
I'm going mono because of the CA through the Achromat refractors, that was my deciding choice and I like my 6" refractor and it will likely be my primary scope. I'm sure the 8" Newt will get a look in depending on targets. Any CA can be removed post processing and I've been told I can't shoot through the luminance filter (or not to) as that will cause CA, advised only to use the RGB and narrow band when I have the money to buy them, better still if I can find an used set of 1.25" narrow band filters for a good price somewhere.
The 1600 I've left out of my choices because it is a smaller pixel size and will not be as good through longer focal length tubes, or so I've been told by a lot of people and read about on a lot of other forums. Plus, I've done my money on used Nikon lenses in the past and would rather buy something new that's going to be working out of the box and not keep thinking it must be something I'm doing wrong only to eventually find I've been had.
|