Search found 8 matches

by SimonDV
Thu Sep 07, 2017 8:10 am
Forum: This is SolarChat !!
Topic: First post and couples of images taken with 8" Hat in St Veran (France)
Replies: 16
Views: 3087

Re: First post and couples of images taken with 8" Hat in St Veran (France)

Ciao Ale, Have a look at the last slide in http://airylab.fr/contenu/HAT/fiche%20HRST%20EN.pdf, that's representative of the HaT ERF transmission curve. There is signal even below 500nm, which allows the setup to work like a Hershel helioscope in terms of flux. The good thing is that the EdgeHD are ...
by SimonDV
Wed Sep 06, 2017 12:00 pm
Forum: Solar Astronomy Shop and Swap
Topic: Solarscope with Solarspectrum H-alpha filter
Replies: 4
Views: 5023

Re: Solarscope with Solarspectrum H-alpha filter

Hello,

Is the setup still for sale?

Cheers,

Simon
by SimonDV
Wed Sep 06, 2017 11:56 am
Forum: This is SolarChat !!
Topic: The biggest spot in 2674 from Sept4
Replies: 1
Views: 681

Re: The biggest spot in 2674 from Sept4

Nice! Sounds that you could still gain by lowering the percentage of images retained. Shooting also a larger number of frames, with gain at minimum will help you a lot.

Simon
by SimonDV
Wed Sep 06, 2017 9:00 am
Forum: This is SolarChat !!
Topic: Third test with 228 F8 truss tube.
Replies: 15
Views: 2658

Re: Third test with 228 F8 truss tube.

Perfect shots! It seems you have a good observing place, the images are very homogenous and with a lot of details!
by SimonDV
Wed Sep 06, 2017 7:27 am
Forum: This is SolarChat !!
Topic: First post and couples of images taken with 8" Hat in St Veran (France)
Replies: 16
Views: 3087

Re: First post and couples of images taken with 8" Hat in St Veran (France)

Thanks for your kind comments! :-) Ale: Yes I used a 12nm OIII (Astronomik) filter. Btw I also tested a Lumicon OIII filter but for some reasons it didn't work, the amount of light being too large with that one (I suspect some UV and/or IR leak). And yes, the HaT scope has its front aspheric plate E...
by SimonDV
Tue Sep 05, 2017 8:37 am
Forum: This is SolarChat !!
Topic: First post and couples of images taken with 8" Hat in St Veran (France)
Replies: 16
Views: 3087

First post and couples of images taken with 8" Hat in St Veran (France)

Hello, This is my first post here so I guess it would be better to introduce myself a bit before posting any image :) My name is Simon, I live in Switzerland and amateur astronomer for...well...quite a long time now :D Up to a couple of years I wasn't specially focused on solar observation, just fro...