“I am the only person to ever ace a 1951 USAF resolution test. My 'to observe' list says 'done'. I do not use charts or atlases when I starhop; men do not use maps. One of my sketches won an SBIG deep sky imaging contest. I am the life of star parties I have never attended. I never say anything looks like a faint fuzzy - not even a faint fuzzy. Pilots aim green laser pointers at me. Don Pensack proofreads my CN forum posts.” - The Most Interesting Astronomer in the Universe
Jules. Tal 100RS Skymax 150 pro mak 6" f5 pds newt Swift 839 vintage frac HEQ5 syntrek and lots of lovely ortho`s
Quote:It might be worth filling the chip with a white epoxy, and very carefully. I wouldn't want to blacken it.
MarkEON 80 - Twilight 2 | C11 - iEQ45 | Astro Physics 175EDF - 900GTO | Powered by Televue
Quote:Quote:It might be worth filling the chip with a white epoxy, and very carefully. I wouldn't want to blacken it. Blackening a chip like this is the preferred method, you want to prevent unwanted reflections, ghosting, ect from the reflective faces of the chip. White epoxy will just exacerbate the problem. The blackened chip will be no more detrimental that the secondary obstruction in reflectors.
Tal 200K Klevtsov, Tal 2M, Tal 1, Tal M, Tal Alcor, Burgess 90mm Fluorite, PZO T50x70, Carton 60/1000. Too many eyepieces and mounts.
Quote:If it's to be painted, use flat black enamel and a quality sable brush. It might not be a bad idea to blacken the lenses edges as well, if the lenses are removed from the objective cell for the painting of the chip, and to reduce stray light overall; the inner portion of the cell, too, if not blackened already.There seems to be no effective way to duplicate the missing portion and assimilating it into the remainder without visual detriment. It's not the same as with ordinary glass, so painting the chip is probably the only choice. I recently restored an eyepiece, blackening the critical areas of the light path, including the lens edges.Cheers,Alan
6"f15 D&G, 6"f5 Jaegers.
TSA 102, TV60.
Docter 15x60, 10x50.
Quote:This European vendor lists the Antares 105/1500 lens in cell for sale. If my calculation is correct the export price is approximately $430 USD plus postage. Antares Elite objective
Helios "Special" 150mm f8 achro (pimped) - now gone to a new home :- Lyra Optic 102mm f11 (Kunming) achro Celestron/Vixen 90mm f14.4 achro Swift 839 60mm f13.5 Intes Micro M603 MC Orion 180mm MC Lunt LS60THa/B1200PTDS50 (solar Refractor) Vixen GP, HEQ5 Syntrek, modified AZ-3, AZ-4 mounts
Quote:I am happy with the image being tweaked, it was just a quick shot, badly focused
SLAP Observer --- TMB130SS, SV102V(LOMO Lens), SV80ED Deluxe "The only thing necessary for the triumph of evil is for good men to do nothing." -- Edmund Burke. "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell "The measure of a man’s greatness is not determined by what he accomplishes for himself, but by what he accomplishes for others.” -- Some Bald Guy