K3's AstroPhotography
"When I consider your heavens, the work of your fingers, the moon and the stars which You have set in place, what is Man that You are mindful of him?" -- Psalm 8:3,4
Homemade 1.25" adapter for webcam (for astrophotography purposes)
The main request was to get simple and cheap adapter for web camera without intervention to camera construction (to keep warranty). For such adapter the only one operation is needed - to remove camera objective.
I looked for the proper material in my home resources and found out printed circuit board (pertinax) plate. This material is easy workable (it can be cut by scissors for iron plate) and it can be joined by solderer. 1.25" tube part was made from 35mm film plastic canister. The bottom of canister was cut off.
Anti-dust cap was made from vitamin C (Celascon) box.

Because my Bushnell telescope is not designed for photography (focal plane is almost inside focuser), the eyepiece adapter must be removed from focuser when using camera. It allows to insert camera deeper into focuser. On the other side the inner diameter of focuser without eyepiece adapter is greater than 1.25", so blue electric insulating tape was used to enlarge outer diameter of adapter's tube.
 
Home-made 1.25" pertinax adapter for webcam. Bottom view. Screw with inner thread is used for fixing the camera body to adapter. It allows mount the camera to a tripod.
Front view. CCD chip is visible. Overall setup for astronomy use.
Anti-dust cap (from vitamin C box cover). Detail of web camera without objective lens.
My balcony observatory with 76mm Newtonian. Astrophotography setup - web camera inserted into focuser.
Detail view of camera adapter inserted in focuser. Eyepiece adapter had to be removed from focuser to enable insert camera adapter deeper.

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Last Update: 10.11.2001