Hi,
Seeing is OK with the help of the air-born pollutant.
Some solar images were captured with:
telescope: AP Starfire EDT 155mm f/9 stopped down to 50 mm (f/27.9)
Filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
north is up
interference fringes are very prominent in the near-white (actually in H-alpha but broadband as oven temperature has not reached set point of 59C).
Uneven illumination noted. Any idea why this happen?
universe24 發表於 2011-12-23 19:27
Not yet. It is the same corner, even when I purposely rotated the CCD 180 degrees today. I am suspecting internal reflection of the extension tube of the telecentric lens. I'll try it out tomorrow.
發表於 2011-12-23 17:58:37
發表於 2011-12-23 19:27:16
