19.4.20

19.04.2020 Nice prom at 10 o'clock on NE limb. Digiscoping adapter.

*

Sunday 19th. 55/52F. Cool easterly breeze. A sunny start, then cloud, then brightened up again. I am not rushing over to the observatory. I'm waiting until the teasing cloud thins.

10.45 Capturing 500 frame videos. Changed to the PST 5mm Blocking Filter. 10ms, Gain 0, 800x600 in SharpCap. WO 2x Barlow. AS!3. ImPPG. Cropped and resized in PF7.

11.07 Slightly better seeing between gusts. More cloud crossing.

I never managed to produce a better image today. So worked on a bracket for digiscoping with my short zoom, compact camera. I realised that I had no need of a complex, adjustable, universal, camera bracket. Just one, made to exactly fit my own little Canon digital camera.

The simplification this offers can avoid unnecessary bulk and weight. The real trick is making the thing foolproof and always perfectly centered on the eyepiece. A tube must be a close, sliding fit on the eyepiece. The camera needs a modest but rigid table on which to sit and be clamped by the tripod screw socket at exactly the correct distance from the eyepiece. The camera is supported by the eyepiece via the angle bracket.

I made a simple example out of thin aluminium angle to avoid wasting better material. In retrospect  I could have used stiff cardboard for the mock-up. The next step is to fix an eyepiece tube to the angle.

*

No comments: