glass solar filter

1970maurizio

Affiliation

American Association of Variable Star Observers (AAVSO)

Sun, 02/26/2023 - 10:06

Hi, I have a Mak127/1500 Skywatcher with full aperture filter in Astrosolar (Baader) which I constantly check for holes! I wanted to know if there is a quality glass filter comparable to the Astrosolar for my telescope, in order to be more relaxed in my observations.

Thanks

Maurizio

mikenapper

Affiliation

None

Sun, 02/26/2023 - 10:56

Glass solar filter

Baader Solar film provides the highest quality image of the solar filter films and higher quality than the glass filters. Optically flat glass is very expensive. I’m not aware of any of the glass filters that use it. Yes, you should check any filter, film or glass before use. It’s a simple check. And yes the coatings of glass filters deteriorate with age.

1970maurizio

Affiliation

American Association of Variable Star Observers (AAVSO)

Sun, 02/26/2023 - 17:45

Glass solar filter

Well, then I prefer to keep the Astrosolar filter!

Thanks for the information

LKR

Affiliation

American Association of Variable Star Observers (AAVSO)

Mon, 02/27/2023 - 13:30

Thanks to everyone for thinking safety first!

Maurizio and Mike -

Thanks for the important reminder to always check your filter for holes/cracks, etc. It should be a two parter - looking directly at your filter away from the sun to look for obvious defects, and then holding the filter up towards the sun using just your eye and looking for bright spots. The same process should be used for checking eclipse glasses.