XT10 classic with premium optics Tri-knob CR2 focuser
Catseye + Glatter collimation tools
StarBlast 4.5" & 6"
Round Table Platform
Quote:May I ask where you bought the book from?
Quote:Quote:May I ask where you bought the book from?http://bit.ly/14uVf2F
nOOb with a ETX-80, ETX-90 and a Coulter Compact Odyssey 10.
Quote:Good post Atl. New Perspectives is a great little book. Lots of great information on collimation, and just the right size to keep in an accessory case--which is where mine stays, so it's handy when I need it.Vic and Jason have indeed been a great deal of help in demystifying a process that looks harder than it really is, and explaining how it all works. They do us all a great service.
Rob 18" f/4.3 Starmaster 8" Meade LX200 Classic Celestron 15x70 Skymaster Binoculars
Jim Fly - Manufacturer
Indiana for a three more weeks...
14.5" Teeter w/ Richard Fagin mirror, TT #66
EON 120ED on CG-5 ASGT
Lunt LS60THa/B1200 Sky Guy Porta II
Denk Super System with A45 OCS
Quote:Thank you Jim, I just ordered the book today. I am looking forward to reading it. Ken
Quote:...I recently went back and re-read New Perspectives again, and I can honestly say it was the first time I understood everything completely and even thought about a few things I think he'd left out.[Vic, I'll send you an email one day soon when I get my head out from under SEO changes to my website.]
Quote:...I've noticed even the manufacturers of telescopes are paying attention and making their scopes more dimensionally stable to hold collimation better.
Quote:I've been thinking about providing additional information on alignment (and misalignment) signatures and their relative sensitivity to alignment errors, including both "passive" and laser signatures.
AD10, NoName8, DS-16 with Spooner primary.
ES, Sterling, Parks, Baader, TV, GSO EP's and a lone Nagler.
Nikon, Celestron binos
Calypte Anza, California
Quote:I have the Third Edition (didn't know there was now a Fifth) from 1991. A long time! When I collimate a Newtonian, I've often wondered why some enterprising garage machinist doesn't invent a better spider.Edited to add:After posting the preceding, it occurred to me that maybe I was ignorant of new hi-tech spiders. After all, my "newest" Newtonian dates from 1978. What I see online from Protostar and Astrosystems are essentially the spiders we had 60 years ago! You turn tiny collimation screws (the "modern" upgrade is hex-head screws), then run to the eyepiece end to see what the effect was. The final adjustment usually requires physically twisting the secondary holder. One of my scopes has a Novak spider whose hub is unthreaded. The shaft of the secondary holder is held by a nut at each end, but the essential fit is loose, and there's lots of play in the alignment. What a mess!
Fred StarStructure LE Series 18" f/4.3 (Zambuto & Nexus/ServoCat/Skytools3 Pro) Celestron 8" SCT w/Starlight Feathertouch Microfocuser; Celestron 102mm f/9.8 refractor Stellarvue SV80ST f6 Triplet APO Tele Vue & EarthWin binoviewers Enough Eyepieces and Accessories to put my Scopes to Good Use Free-Turn Q HalfHitch, CG5-ASGT(2), Astro-Tech Voyager mounts
Quote:Now that I understand the basic process there is another activity I can engage in when it is daytime or cloudy...use my autocollimator to see how tight I can get it. That seems to be a fun thing in it's own right...at least for nerdy types like me.
Antares 12" Dob Stellarvue 10*60 finder Telrad Meade 25mm Plossl, Orion 10mm plossl, Celestron 6mm plossl, Paradigm 18mm,15mm,12mm, 8mm, Knight Owl 20mm, Shorty 2x barlow, Celeston Ultima 2x Catseye Triple Pack Collimation 4.5" Tasco 11TR Frankenscope 60mm Tasco 9TE-5 60mm Tasco 7T Oberwerk 12*60 binos
Quote:I agree. Once it clicks it's a fairly easy task with the right tools. I only wish I could see those darn extra images more clearly through my autocollimator!!
CPC1100 AstroTelescopes 80 mm f/7, 102mm f/11 ES AR127mm f/6.5 Zummell 254mm F4.9 Dob Coronado SolarMax II 60mm Delos 14mm, Axiom LX 10mm, 15mm 1.25"; 19mm, 23mm, 31mm 2" AstroTech Hi Grd Plossl 4mm, 6mm, 12.5mm, 17mm, 20mm UO Abbe Ortho Volcano tops smoothies Titan 26mm 2" ES 20mm 1.25" Celestron 40mm Plossl (came w/ scope) 1.25" Meade 5000 series 14mm Plossl 1.25" Baader Hyperion MkIII 8-24mm Zoom Pentax XW 7mm 1.25" TMB II planetary 3.2mm, 5mm 1.25" Lumicon UHC filter 2", OIII 2"
Quote:...If doing this at night, a bright LED light aimed at the center marker (Catseye has a nifty little light for this) will make all 4 images easily visible, though using the cheshire will be a little more difficult unless you flood the entire system with light....
Quote:e and f of triangulum
Dan Orion XT8g If your dob isn't broke, fix it anyway. Don't tell me what I want to hear, tell me the truth.
Quote: to you Vic.
I've been through two editions of your book.
My eyepieces are made from the waste product of exploding stars. 10XTi 102XLT ST80A(2" Focuser) XW: All; XO: 2.58 Televue: Naglers-T1 Smoothside-full set, 17T4,12T4,Ethos 17,4.7; plossels-40,32,20,17,&7.4mm; Pans-22,24mm; Delos-6,8,12,17.3mm ES100: 5.5,9*,14,20 ES82: full set ES68: 16,20,24,34 NLV: 5,9,10,15 Ortho: HD-7,9; OPS-9,12 Meade RG 7mm Other: Pentax 12.5K(.965), 10mm Parks Zoom: Nag3-6 *=on b/o DAS Dark Site
Quote:As they say, "The cat is out of the bag." As manufacturers push focal ratios ever shorter, maintaining axial tolerances will require diligence to minimize mechanical stability issues and ensure optimal performance.
Quote:Collimation is for me like going to the dentist. Despite having the history of one-to-one instruction by Vic on WSP, I have still ordered the book...