Search found 29238 matches

by marktownley
Wed Nov 25, 2020 12:33 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine 22nd November
Replies: 10
Views: 69

Re: Sunday Sunshine 22nd November

Thanks Terry, thanks Stu.
by marktownley
Wed Nov 25, 2020 6:43 am
Forum: This is SolarChat !!
Topic: Coronado 90mm. I can only see part of the sun with details
Replies: 15
Views: 281

Re: Coronado 90mm. I can only see part of the sun with details

it is not normal or acceptable for such an expensive product Hi Victor, It's not normal, neither is it acceptable, sadly it is all too common (poor performance) from solar manufacturers in general :( Based on what you've said so far and how much you've persevered with getting the double stack right...
by marktownley
Tue Nov 24, 2020 9:56 pm
Forum: This is SolarChat !!
Topic: Solar Talk - Monday 23rd November 19.30UT
Replies: 34
Views: 386

Re: Solar Talk - Monday 23rd November 19.30UT

DeepSolar64 wrote:
Tue Nov 24, 2020 9:51 pm
Mark, have you a link to it on YouTube yet?
https://www.youtube.com/watch?v=9f8ULLN ... c6JAAE4dOA
by marktownley
Tue Nov 24, 2020 9:49 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: How would the Lunt 100mm (vs 80mm) perform in average UK conditions?
Replies: 20
Views: 159

Re: How would the Lunt 100mm (vs 80mm) perform in average UK conditions?

By a stroke of good luck a beautiful 130mm TMB refractor has come up that I can buy for a really good price. I’m a refractor addict. I’m tempted to purchase this and combine it with an ERF (Baader) and a H filter at the back. This way, if I wished, I could also use it at night (although that wouldn...
by marktownley
Tue Nov 24, 2020 9:47 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: How would the Lunt 100mm (vs 80mm) perform in average UK conditions?
Replies: 20
Views: 159

Re: How would the Lunt 100mm (vs 80mm) perform in average UK conditions?

SimonWalsh wrote:
Tue Nov 24, 2020 9:04 pm
100mm Tak.
I have a 100mm Tal Simon. With a decent focuser and tube rings on it is an excellent solar scope.

Mark
by marktownley
Tue Nov 24, 2020 7:40 pm
Forum: This is SolarChat !!
Topic: Full disk 23-11-2020
Replies: 12
Views: 79

Re: Full disk 23-11-2020

That's a cracking disk Rainer, thanks for sharing!
by marktownley
Tue Nov 24, 2020 7:39 pm
Forum: This is SolarChat !!
Topic: AR2783 November 21, 2020
Replies: 10
Views: 112

Re: AR2783 November 21, 2020

Superb images Franco! I get images like that with my HaT rarely, your seeing is better than mine.
by marktownley
Tue Nov 24, 2020 7:37 pm
Forum: This is SolarChat !!
Topic: November 24 2020 Observations. WL only
Replies: 7
Views: 46

Re: November 24 2020 Observations. WL only

Nice report James. The new active region is the largest since April 2019, cloud here today and work but hoping can get a look at it over the weekend.
by marktownley
Tue Nov 24, 2020 7:34 pm
Forum: This is SolarChat !!
Topic: AR2785 & New Big Spot and Looping Prominence!, Discs | Nov 23rd 2020
Replies: 14
Views: 153

Re: AR2785 & New Big Spot and Looping Prominence!, Discs | Nov 23rd 2020

That's a really nice collection of images Marty. Looks good at the obs.
by marktownley
Tue Nov 24, 2020 7:30 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine 22nd November
Replies: 10
Views: 69

Re: Sunday Sunshine 22nd November

Thanks Franco and Fabio, here's a shot of the active region and the departing limb.

Imageactive-regions-other-side-ha-bw by Mark Townley, on Flickr
by marktownley
Tue Nov 24, 2020 4:52 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine 22nd November
Replies: 10
Views: 69

Re: Sunday Sunshine 22nd November

Thanks Geoff!
by marktownley
Tue Nov 24, 2020 4:50 pm
Forum: Solar Scope Modifications
Topic: G band instead of Ca-k filter
Replies: 21
Views: 157

Re: G band instead of Ca-k filter

Simple answer, no! G-Band imaging to be 'true' G-band needs to be considerably narrower, like Ha or CaK - ultra narrowband. The 430nm filter is effectively only a narrow band filter, where it benefits is the shorter wavelength gives increased resolution over 540nm. Hi Mark, ... where it benefits is...
by marktownley
Tue Nov 24, 2020 4:25 pm
Forum: This is SolarChat !!
Topic: Sun 23rd Nov
Replies: 10
Views: 95

Re: Sun 23rd Nov

Nice shots John!
by marktownley
Tue Nov 24, 2020 4:23 pm
Forum: This is SolarChat !!
Topic: Time lapse AR 12785 from 23-11-2020
Replies: 7
Views: 70

Re: Time lapse AR 12785 from 23-11-2020

Great movie! I love the subtle flow of material.
by marktownley
Tue Nov 24, 2020 4:20 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20201123) | new AR, GOOD seeing
Replies: 14
Views: 200

Re: Today's SUN (20201123) | new AR, GOOD seeing

Very impressive indeed Pedro!
by marktownley
Tue Nov 24, 2020 4:19 pm
Forum: This is SolarChat !!
Topic: Sol from the 23rd of November 2020.
Replies: 7
Views: 47

Re: Sol from the 23rd of November 2020.

Very nice indeed Eric!
by marktownley
Tue Nov 24, 2020 4:16 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine 22nd November
Replies: 10
Views: 69

Sunday Sunshine 22nd November

Hi All, Apologies if i'm not as busy on here of late, work is just sapping all my time, meaning while I can find the time for a quick scan of posts I don't have the opportunity to respond to all. So, if I haven't responded to your post don't take offence, i'm just struggling to fit everything in the...
by marktownley
Tue Nov 24, 2020 3:58 pm
Forum: Solar Scope Modifications
Topic: G band instead of Ca-k filter
Replies: 21
Views: 157

Re: G band instead of Ca-k filter

Another thought, would stacking up with a double stack420nm CWL, 25mm Dia., Hard Coated OD 4.0 10nm result in a narrower band of 5nm or am I being really stupid. Simple answer, no! G-Band imaging to be 'true' G-band needs to be considerably narrower, like Ha or CaK - ultra narrowband. The 430nm fil...
by marktownley
Tue Nov 24, 2020 3:51 pm
Forum: This is SolarChat !!
Topic: Another Zoom Session ?
Replies: 10
Views: 117

Re: Another Zoom Session ?

Good plan!
by marktownley
Tue Nov 24, 2020 3:32 pm
Forum: This is SolarChat !!
Topic: Sunday fun in the Sun (22/11/20)
Replies: 13
Views: 126

Re: Sunday fun in the Sun (22/11/20)

Nice disks Alexandra!
by marktownley
Tue Nov 24, 2020 7:30 am
Forum: This is SolarChat !!
Topic: Solar Talk - Monday 23rd November 19.30UT
Replies: 34
Views: 386

Re: Solar Talk - Monday 23rd November 19.30UT

Thanks everyone for your kind words and support.
by marktownley
Mon Nov 23, 2020 10:29 pm
Forum: Solar Scope Modifications
Topic: G band instead of Ca-k filter
Replies: 21
Views: 157

Re: G band instead of Ca-k filter

Yes it would work, you might find you need a UV/IR filter with it too. I'd cut your teeth with the 80mm first rather than the c11.
by marktownley
Mon Nov 23, 2020 10:09 pm
Forum: This is SolarChat !!
Topic: Solar Talk - Monday 23rd November 19.30UT
Replies: 34
Views: 386

Re: Solar Talk - Monday 23rd November 19.30UT

Thanks everyone, i'll pop this in the reference library in a day or so time.