The opinions expressed herein are solely mine as an amateur astronomer hobbyist & consumer. Information herein was correlated from experience, discussions with others, & research from multiple sources freely available at time of posting. All reasonable care & skill was used, but no warranty is made as to accuracy, & liability cannot be accepted for errors/omissions. This is for information only and not intended nor implied to be a substitute for professional advice.
Quote:No it was more like a round piece of plastic he put on top of the spiders.
Quote:Might have been a home made apodizing mask.
10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
8 f7.62 eq.
12 f5 Dob
Barly my 10 yr old faithful Bichon pup.
C10NGT, Z8, 150 Rumak, XLT 150, C6, C5, SW5 Newt, 4.5 Ball, C102GT, C90, ST80, A70LF; 15x70, 25x100; Burgess BV; Paracorr II; T6 2.5, XO 2.58/5.1, Ethos-SX 3.7, Delos 4.5, TV Plossl 7.4-26, BCO 10, Hutech HC 12.5, Sterling 12.5-25, ES100 14, CZJ H 16/25, CZJ O 16, M5k UWA 24, T5 31, Ultrascopic 35, Titan-II 40; Bino Pairs M5k UWA 6.7, Baader Zoom 8-24, M5k SWA 24, TV Plossl 26, RKE 28.7; Zooms NZ 2-4, NZ 3-6, Leica ASPH 8.9-17.8, Baader 8-24; Baader Zoom Barlow, VIP Barlow
-Tristan Schwartz- Former Resident Astro-Guru, Arizona Museum of Natural History
Member of Colorado Springs Astronomical Society Look for my article "Making the Case for Structured Observing," coming to Sky & Telescope in 2014!
6" Orion DSE Dob, Coronado PST
Kmart 40mm-Thanks Mom|Jason60mm-Thanks Dad|C80SS-Thanks Wife|C90|C102|C6XLT|AP130EDFGT|C-11XLT EQ-2|EQ-3|CG5GT|Mach 1 & Eagle "For once you have tasted flight, you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return".-Leonardo da Vinci "We're all in the gutter, but some of us are looking at the stars."-Oscar Wilde ~RIP Dad, you were my best friend...Godspeed!~
Quote:In fact it was Ken's telescopeThanks
Quote:Quote:In fact it was Ken's telescopeThanks Yup. Apodizing mask. He calls it "The 60's filter." He even has an article on it on the CSAS website. http://csastro.org/2009/10/a-do-it-yourself-apodizing-mask/Which park was the event at, by the way? Chances are I looked through that same scope that same night.
Quote:So, now that it is brought up, what is the consensus on apodizing screens?
Quote:Quote:Quote:In fact it was Ken's telescopeThanks Yup. Apodizing mask. He calls it "The 60's filter." He even has an article on it on the CSAS website. http://csastro.org/2009/10/a-do-it-yourself-apodizing-mask/Which park was the event at, by the way? Chances are I looked through that same scope that same night. It was at Fox Run Park
Quote:Ah, the infamous "night of the sprinklers" when Jason won the first awarded CSAS medal of valor for diving on a live sprinklerhead in order to save everybody's equipment. Good times.
Quote:Good points made on diffraction, etc Mike! Cheers,