B Cuddihee 1968 Jason Empire 60X700mm refractor 1977 Jason Empire 313 discoveror EQ Celestron Nexstar8SE "The Bumblebee", with Feathertouch Microfocuser, and Celestron CPC Heavy Duty Tripod. Stellarvue 50mm "Sparrowhawk" finder Denk bino's with Power x switch. Pair of Edmund 28 plossls. Pair of Edmund 28 RKE'S Pair of 24mm Brandons. Pair of Smart Astronomy 19 EF's. Pair of 18mm Celestron Ultimas
Time spent looking at the stars is added to your life
Bashful, Misty, and little Ralphie - my heavenly stars
A-P 105 Traveler ~ TEC 140 ED ~ TEC 6 MCT
A-P Mach1 GTO ~ Losmandy GM-8 ~ TV Gibraltar
Quote: ...and everone love the 24mm.
"I have been paddling in the shallows of a great ocean of knowledge." - Sir Isaac Newton * * 15" F4.55 Starsplitter Dob & a Denk II binoviewer * * http://peaceofsky.wordpress.com/ Pacheco State Park Fremont Peak
Quote:Aside from the IPD issues, be aware that the 24mm 68's may vignette in your system to some degree.
Dave JessieOutreach Events
Quote:I use my Mark V binos with a 1.7x GPC in a TEC 140. Thus my 24 Pans work at an effective focal length of 14.1mm, 69x, and give me just under 1 degree FOV (0.98).
Quote:Quote:I use my Mark V binos with a 1.7x GPC in a TEC 140. Thus my 24 Pans work at an effective focal length of 14.1mm, 69x, and give me just under 1 degree FOV (0.98).While the Double Cluster (N884/N869) can be seen in a 1 degree FOV, I prefer to use the 1.25 GPC in my TEC 140 with MkV and Pan 24s for a TFOV of 1.33 degrees which easily frames both clusters with a little extra room. I've also used no GPC at all for a TFOV of 1.67 degrees and that is actually preferable since the star field in that neck of the woods is jam packed with stars.