Optics suitable for solar observations

clkotnik

Affiliation

American Association of Variable Star Observers (AAVSO)

Thu, 07/13/2023 - 17:00

Hi,

I was wondering if the optics that produced this image are suitable for participation in solar observing?

thanks

Cliff

hky

Affiliation

Royal Astronomical Society of Canada (RASC)

Thu, 07/13/2023 - 19:21

Solar Observing

HI Cliff,

A smaller apeture telescope 4-6" is good for Solar Observing. You need a Solar Filter on the front of the telescope, to only allow .001% of the sunlight to come through. There is mylar or Solar Screen that can be used for your filter. Full apeture, or a sub-apeture mask for a larger telescope .

Kim

tst

Affiliation

American Association of Variable Star Observers (AAVSO)

Thu, 07/13/2023 - 21:10

Hi Cliff,

For my solar set…

Hi Cliff,

For my solar set up I use a home built 10 cm F/10 Newtonian, an eyepiece that provides a magnification of 62X, and most important a Thousand Oaks full aperture filter.

Take care.

Steve Toothman

clkotnik

Affiliation

American Association of Variable Star Observers (AAVSO)

Fri, 07/14/2023 - 14:09

Thanks for the feedback. …

Thanks for the feedback. The optics are 400 mm FL, 71 mm D = 2.8". So perhaps on the small size. I was wondering if you can judge the resolution shown in the image? Is that enough resolution for accurate counting?

Am I correctly reading the manual - for long term comparisons the sensor needs to be my eye? Capturing an image such as this with an electronic sensor and then analyzing it is not acceptable?

thanks

CLiff