Michael Rosolina Celestron CGE Pro 1400 f/11 SCT 1980 Orange Tube C8 f/10 SCT 108mm f/4.2 Astroscan Reflector 50mm f/10 Galileoscope 40mm PST f/10 APM Germany HD 15x70 binoculars Canon 12x36 IS II binoculars Mark I Eyeball My CN Gallery
David W. Knisely . . . . . . "If you aren't having fun in this hobby, you aren't doing it right." Hyde Memorial Observatory http://www.hydeobservatory.info Prairie Astronomy Club http://www.prairieastronomyclub.org
Present gear: 16-inch f/4.5 Dobsonian 50mm straight through-finder Green laser pointer 26mm, 32mm, and 38mm 70 degree field EPs 4.7mm, 14mm and 18mm 82 degree field EPs 8mm, 17mm, 21mm 68 degree field EPs 2X 2" Barlow Tirion star atlas (white stars, black background) hand-laminated Megastar Editor & co-founder Las Vegas Astronomical Society Observer's Challenge To nudge or not to nudge, that is the question www.fredrayworth.com
Quote:Hi David,Clear skies are forecast here this weekend, so I am going to take a high power look at M1. I going to see if I can borrow an OIII filter for the weekend, too (and put one on my Xmas list). The pulsar is beyond the theoretical limits of my SCT (limiting magnitude 14.8) but I'm going to look for it anyway if conditions allow. The visitors center at the NRAO facility in Greenbank has an exhibit where you can dial in different pulsars and hear their radio signal. The neutron star at the center of the Crab is spinning 30 times per second so it sounds like a continuous brrrrrp! Thanks for the feedback--always good to have the benefit of your experience.
14" Strut; 10"XT; 102ES; 22 in Process; 3.5,5,7,10,14,20mm Pentax XW; 17.3 & 12mm Delos; 27mm Panoptic; 20&24mm ES 68; 24mm ES 82; 30mm ES 82; 6&10mm BCO;
Quote:I've never had much luck with filters on M-1. Most of the time they've blotted the nebula out or severely diminished its features. ......
George N Obsession 20 Optical Guidance Systems 10" F/9 R-C Cass 6" F/5 & 8" F/8 home-made Newts Explore Scientific 127mm ED MI-250 mount Denk II bino-viewer, with PowerX and Newt reducer, Member, International Dark-Sky Association
Quote:Quote:I've never had much luck with filters on M-1. Most of the time they've blotted the nebula out or severely diminished its features. ...... That’s been my experience too. I’m wonder if an h-beta filter would help with seeing the filaments? I’ve not looked for the pulsar so I have know idea if I could see it. The next time I have M-1 in one of the 20-inchers I use, I’ll give it a try. Anyway…. M-1 made a nice sight in my 127mm triplet refractor a few nights ago. I've been lucky enough to have clear skies every night for the past week except for one night. I just left the ES127ED out on the front lawn, but alas, with snow coming, I'll have to bring it in soon.