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Theophilus, Cyrillus and Catharina
Uploaded by
frank5817
, Nov 04 2008 01:44 AM
- Owner: frank5817 (View all images and albums)
- Uploaded: Nov 04 2008 01:44 AM
- Views: 885
- Album: frank5817's photos
Sketching: For this sketch I used: black Strathmore 400 Artagain paper 8”x 9”, white and black Conte’ pastel pencils and a blending stump. After scanning, Brightness was decreased (-2) and contrast increased (+1) using Microsoft Office Picture Manager. Telescope: 10 inch f/ 5.7 Dobsonian 6mm eyepieces 241x Date: 11-3-2008 to 11-4 2008, 11:00 - 12:15 UT Temperature: 20° C (68° F) clear, breezy Seeing: Antoniadi III, II Colongitude: 339 ° Lunation: 6 days Illumination: 29.5 % Frank McCabe
Frank, awesome sketch. Who is the maker of your dob?
MathTeacher,
Thank you.
All my telescopes are home made. I hand ground, polished and figured the primary mirrors in my scopes. I have completed 12 scopes over the past 35 years and still 5 I regularly use from 3" to 18" in dia.. The others I have given to friends and relatives.
Frank
All my telescopes are home made. I hand ground, polished and figured the primary mirrors in my scopes. I have completed 12 scopes over the past 35 years and still 5 I regularly use from 3" to 18" in dia.. The others I have given to friends and relatives.
Frank
