Search found 31080 matches

by marktownley
Sat May 15, 2021 7:15 pm
Forum: This is SolarChat !!
Topic: AR2822 WL (High Res), CaK, HA | May 14th 2021
Replies: 20
Views: 177

Re: AR2822 WL (High Res), CaK, HA | May 14th 2021

Note that your example is a 400% view. I don't see grid pattern in your image either, just pixels from 400% view. You see, Marty was paying attention, and I was not. Missed the 400% view screen. It's either seeing, tube currents or collimation that are the issue. I'm sorry H-alpha, but unless your ...
by marktownley
Sat May 15, 2021 2:09 pm
Forum: This is SolarChat !!
Topic: Sun FD in H-Alpha 8th of May 2021
Replies: 1
Views: 18

Re: Sun FD in H-Alpha 8th of May 2021

Good results Arne!
by marktownley
Sat May 15, 2021 2:08 pm
Forum: Solar Scope Modifications
Topic: Any suggestion for a DIY Quark active cooler?
Replies: 20
Views: 188

Re: Any suggestion for a DIY Quark active cooler?

minhlead wrote: Sat May 15, 2021 2:07 pm
marktownley wrote: Sat May 15, 2021 1:46 pm What about using a beer can cooler sleeve?
it is just some kind of insulation right?
Think you can get 'active' ones and ones that go in the freezer prior to use... Worth a look around the internet.
by marktownley
Sat May 15, 2021 1:59 pm
Forum: This is SolarChat !!
Topic: AR2822 WL (High Res), CaK, HA | May 14th 2021
Replies: 20
Views: 177

Re: AR2822 WL (High Res), CaK, HA | May 14th 2021

Excellent photos Marty as usually. I love your WL resolution. Also a lot of food for thought for me, since you are providing the SSM measurements... (many thanks for sharing them). Please have a look at the SSM I had the first day I had up in the mountain at 1800 m altitude. I think it is similar t...
by marktownley
Sat May 15, 2021 1:57 pm
Forum: This is SolarChat !!
Topic: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue
Replies: 8
Views: 112

Re: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue

Is it midway along the draw tube or at the end? Can you post a pic?
by marktownley
Sat May 15, 2021 1:50 pm
Forum: Solar Scope Modifications
Topic: The ubiquitous Celestron C6-R
Replies: 8
Views: 168

Re: The ubiquitous Celestron C6-R

Hi Bob Just one question: how much do you think the AR coatings on these lenses will affect the CaK lines? From observations (I have had several of these scopes) and from what I have heard the coatings on these achromats have a minus violet filter in them and can loose light in the CaK range. This ...
by marktownley
Sat May 15, 2021 1:46 pm
Forum: Solar Scope Modifications
Topic: Any suggestion for a DIY Quark active cooler?
Replies: 20
Views: 188

Re: Any suggestion for a DIY Quark active cooler?

What about using a beer can cooler sleeve?
by marktownley
Sat May 15, 2021 1:43 pm
Forum: This is SolarChat !!
Topic: Quark-Ha with 6" f8
Replies: 16
Views: 144

Re: Quark-Ha with 6" f8

Great images and great comparison Jozef, thanks for sharing!
by marktownley
Sat May 15, 2021 1:40 pm
Forum: This is SolarChat !!
Topic: AR2822 WL (High Res), CaK, HA | May 14th 2021
Replies: 20
Views: 177

Re: AR2822 WL (High Res), CaK, HA | May 14th 2021

Great shots Marty! Glad the seeing was playing ball for you!
by marktownley
Sat May 15, 2021 1:38 pm
Forum: This is SolarChat !!
Topic: The Good, the Bad and the Ugly – a tale of 3 Coronado BF15 blocking filters
Replies: 2
Views: 50

Re: The Good, the Bad and the Ugly – a tale of 3 Coronado BF15 blocking filters

Good comparison Arne, glad you found the root of the problem. You can replace the failed ITF filters quite cheaply and easily, the damaged mirror coating is a different issue though and i'm not sure is fixable.
by marktownley
Sat May 15, 2021 1:35 pm
Forum: This is SolarChat !!
Topic: Catch up 11th May 2021
Replies: 7
Views: 51

Re: Catch up 11th and 12th May 2021

Nice set of results Ella!
by marktownley
Sat May 15, 2021 1:33 pm
Forum: This is SolarChat !!
Topic: 2021.05.15 solar Ha C8 ERF D=203mm
Replies: 3
Views: 53

Re: 2021.05.15 solar Ha C8 ERF D=203mm

Nice results with the big scope!
by marktownley
Sat May 15, 2021 1:31 pm
Forum: This is SolarChat !!
Topic: May 13 2021 Imaging.
Replies: 10
Views: 88

Re: May 13 2021 Imaging.

Very nice James!
by marktownley
Sat May 15, 2021 1:29 pm
Forum: This is SolarChat !!
Topic: small animation of May 13
Replies: 11
Views: 117

Re: small animation of May 13

These look great Paul!
by marktownley
Sat May 15, 2021 1:28 pm
Forum: This is SolarChat !!
Topic: 05.14.21 Sun in Lunt50
Replies: 9
Views: 96

Re: 05.14.21 Sun in Lunt50

Very nice!
by marktownley
Sat May 15, 2021 1:27 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20210514) | LUNT152
Replies: 12
Views: 109

Re: Today's SUN (20210514) | LUNT152

Very good Pedro!
by marktownley
Sat May 15, 2021 1:26 pm
Forum: This is SolarChat !!
Topic: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue
Replies: 8
Views: 112

Re: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue

Where abouts is the lip in the focuser tube?
by marktownley
Sat May 15, 2021 1:24 pm
Forum: This is SolarChat !!
Topic: May 14 2021 WL only.
Replies: 6
Views: 63

Re: May 14 2021 WL only.

Thanks for the report James, hope you have a good weekend too!
by marktownley
Sat May 15, 2021 1:22 pm
Forum: This is SolarChat !!
Topic: AR12822 extreme close-up 14/05/2021
Replies: 16
Views: 175

Re: AR12822 extreme close-up 14/05/2021

Good shots! Like others have said maybe back off on the sharpening a bit.
by marktownley
Sat May 15, 2021 1:19 pm
Forum: This is SolarChat !!
Topic: Sol 26-4-21 Ha
Replies: 7
Views: 56

Re: Sol 26-4-21 Ha

Looks good Steve!
by marktownley
Sat May 15, 2021 1:18 pm
Forum: This is SolarChat !!
Topic: Solar Spectrum 0.5Å first light
Replies: 10
Views: 133

Re: Solar Spectrum 0.5Å first light

Congrats on the new filter Lou, looks to be a winner. Nice to see a pic of the setup. Looking forward to seeing more results especially with the other setups.
by marktownley
Sat May 15, 2021 1:14 pm
Forum: This is SolarChat !!
Topic: My 2822 version..
Replies: 5
Views: 70

Re: My 2822 version..

A super set here Ronnie!