Skywatcher 6 inch F-5 Newtonian,Lunt LS60THa,Orion ED80T CF ED Triplet,Vintage C-8(1983),Celestron 8se, Celestron CG-5,iEq45, Atik 314L+Mono,Atik 314 L+ OSC, Imaging Source DMk 41AUO2 My images viewed here.. http://www.astrobin.com/users/northisup2/
Quote:I am eager to get to measuring some of the doubles also. This journal has good articles that describe the methodology.http://www.jdso.org/
Thomas Watson - Author of Mr. Olcott's Skies. Available in paperback and ebook formats. Weblog: Under Desert Stars "And Now a Word From Our Sponsor"
Meade 305 ƒ/10.4 LX200 • Royce 250 ƒ/19 Dall Kirkham • AstroTech 250 ƒ/8 RC • AstroTech 250 ƒ/4 "RFT" Newtonian • Meade 80 ƒ/6 ED APO • TEC 140 ƒ/7 APO • Orion 180 ƒ/15 Mak Cass ... Denkmeier II binoviewer - Nikon 8x60 binocular
Astronomical Files from Black Oak Observatory
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
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
I want to do more then just look.
Quote:Can the ep you use still be had somewhere's?