The telescope I was using was my Celestar 8 Deluxe, built in Approx the year 1998 ...
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
Used acronyms: NEML=Naked Eye Magnitude Limit, SQM=Sky Quality Meter, TML=Telescope Magnitude Limit, CO=Central Obstruction, delta_m=difference in magnitudes between double star components, RoT=Rule of Thumb, pD_mm=proposed D_mm for resolving a binary (ident with earlier used pA=proposed Aperture), D_mm=Diameter (of scope) in mm, UCAC4=USNO CCD Astrograph Catalog 4th edition
Quote:There are those people who do love the RKE eyepieces but opinions vary whether the 'new' Edmund Optics RKEs are comparable to the 'old' Edmund Scientific versions. I don't have any of the Edmund Optics branded ones so I can't offer my own opinion. Thank you for taking the time to do the comparison and showing that the price tag doesn't necessarily equate to image brightness & performance. When it comes to planetary viewing, RKEs with their three glass surfaces do yield very nice views.I would like to make note of two things: (1) The $59 price you quoted jumped to $85 about 2-2.5 years ago for a new Edmund Optics RKE:http://www.edmundoptics.com/microscopy/eyepieces/edmund-optics-rke-precision-...(2) RKE actually stands for Rank Kaspereit Erfle as was discovered once the original copyright papers were posted online by a fellow CN'er.Cheers,Troy
Compustar C14 Leo Henzl's Custom C8(VP Sales Celestron) Celestar C8 6" Refractor Adv. GT mount 6" F5 Omni XLT Newt. LXD-75 F4 Imaging SN8 Meade 8" F6 Newtonian Dynamax DX6 Criterion RV-6 ETX-90 Astro Meade 2045 4" SCT B&L 4000 Vixen/Celestron 80mm F11 JC Penny 60mm AZ/ALT Refractor 1963 60mm 15-60 B&L Spotter Binos 25x100 8X40 20x80 Arcturus Bino-Viewer