Search found 563 matches

by bart1805
Wed Aug 14, 2019 7:04 pm
Forum: This is SolarChat !!
Topic: HR granulation with the 300 mm Newtonian - St Véran
Replies: 13
Views: 179

Re: HR granulation with the 300 mm Newtonian - St Véran

Brilliant Christian! Looked at the Saint Veran website, what a beatiful place.
by bart1805
Wed Aug 14, 2019 6:46 pm
Forum: Solar Scope Modifications
Topic: PST Blocking Filter modification unit by AOKSwiss
Replies: 6
Views: 108

Re: PST Blocking Filter modification unit by AOKSwiss

Nice! The interesting and new part is the prism with the right thread to screw the BF5 in.
by bart1805
Mon Aug 12, 2019 5:41 am
Forum: This is SolarChat !!
Topic: Two PST etalons doublestacked
Replies: 11
Views: 171

Re: Two PST etalons doublestacked

Thanks guys! Starry Jack: it is a trade off between resolution and seeing. And if I could choose, I would choose a good seeing. And then image with a green or blue filter. (-; Mark and Stu: problem of uneven illumination will be one of the biggest problems, will let you know if I find something to d...
by bart1805
Sun Aug 11, 2019 6:09 pm
Forum: This is SolarChat !!
Topic: Two PST etalons doublestacked
Replies: 11
Views: 171

Re: Two PST etalons doublestacked

Thanks Franco, will post here how it evolves. CS! Bart.
by bart1805
Sun Aug 11, 2019 11:38 am
Forum: This is SolarChat !!
Topic: Two PST etalons doublestacked
Replies: 11
Views: 171

Two PST etalons doublestacked

For some time I am trying to doublestack two PST etalons. Here is more information about the adapter Gerd Neumann made for me and the older experiments: https://solarchatforum.com/viewtopic.php?f=9&t=25524&p=229597&hilit=doublestack#p229597 Two weeks ago the adapter arrived, today first try. Here ar...
by bart1805
Fri Aug 09, 2019 4:43 pm
Forum: This is SolarChat !!
Topic: Tuesday Sunshine
Replies: 21
Views: 232

Re: Tuesday Sunshine

Hi Alexandra,
I have still got the original mail I received from Torsten, so if you PM me your mailaddress I will send it to you.
Bart.
by bart1805
Sun Jun 23, 2019 8:37 pm
Forum: This is SolarChat !!
Topic: Moon and Saturn conjunction and a quiet Sun
Replies: 9
Views: 297

Re: Moon and Saturn conjunction and a quiet Sun

The images of the conjunction are absolutely brilliant! Thanks for posting!
by bart1805
Sun Jun 23, 2019 5:39 pm
Forum: Solar Software
Topic: SharpCap overlaying a rippled filter effect?
Replies: 11
Views: 370

Re: SharpCap overlaying a rippled filter effect?

Sorry. AS is Autostakkert and AP stands for alignment points.
What you could do is just lay the camera on your desk when connected tot the computer. Aim at a light. Increase gain and decrease exposure time. If I do so there is a grid visible with the asi178mm.
by bart1805
Sun Jun 23, 2019 3:42 pm
Forum: Solar Software
Topic: SharpCap overlaying a rippled filter effect?
Replies: 11
Views: 370

Re: SharpCap overlaying a rippled filter effect?

Is not that the famous grid pattern seen in a lot of cameras when using high gain and a very short exposure time?
What is the effect of using slightly bigger AP's in AS?
by bart1805
Thu Jun 20, 2019 9:12 am
Forum: This is SolarChat !!
Topic: First solar light for a T300
Replies: 13
Views: 431

Re: First solar light for a T300

Great image! Is this the successor of the T250?
by bart1805
Tue Jun 18, 2019 10:41 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: ZWO ASI174 remove IR/dust cover removal
Replies: 4
Views: 322

Re: ZWO ASI174 remove IR/dust cover removal

Can't help you with that, post the question on de ZWO forum, they respond very quickly.
https://bbs.astronomy-imaging-camera.com
by bart1805
Tue Jun 18, 2019 10:12 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: ZWO ASI174 remove IR/dust cover removal
Replies: 4
Views: 322

Re: ZWO ASI174 remove IR/dust cover removal

I think you can gain about 5mm with the low profile adapter. But then you can't use the protect window of the 174. So you might need an external IR filter, which means you will loose a couple of milimeter again.
Is the cooled or normal version?
by bart1805
Tue Jun 18, 2019 10:02 pm
Forum: This is SolarChat !!
Topic: Saturn, Jupiter last night.
Replies: 11
Views: 367

Re: Saturn, Jupiter last night.

Beautiful images of Jupiter and Saturn Jozef. Interesting to see if you could get even more out of it when using Registax. The moon pictures are a bit over sharpened and a bit to dark to my taste, but maybe that is because I am a fan of your soft approach when imaging in H-alpha. Really like the way...
by bart1805
Thu Jun 06, 2019 3:47 pm
Forum: Solar Scope Modifications
Topic: Relation between BF size and the PST Sweet Spot
Replies: 8
Views: 312

Re: Relation between BF size and the PST Sweet Spot

Don't know what you mean exactly. The sweet spot is about the size of the sun in a 400mm telescope. So if your focal length is longer, the sweet spot is smaller than the whole sun.
by bart1805
Thu Jun 06, 2019 3:28 pm
Forum: This is SolarChat !!
Topic: Quick AR - cloud dodging 06/06/2019 Tal/PST mod
Replies: 7
Views: 291

Re: Quick AR - cloud dodging 06/06/2019 Tal/PST mod

Nice David! someone on another forum made the connection with history: on D-Day there should be other features to make the word complete. CTORY is missing.
What is wrong with the processing? To dark?
by bart1805
Thu Jun 06, 2019 2:53 pm
Forum: Solar Scope Modifications
Topic: Relation between BF size and the PST Sweet Spot
Replies: 8
Views: 312

Re: Relation between BF size and the PST Sweet Spot

Nothing will change in my opinion. Sweet spot is caused by the etalon, not by the BF.
by bart1805
Thu Jun 06, 2019 1:30 pm
Forum: This is SolarChat !!
Topic: Calcium with 6 "f8 and Ha
Replies: 19
Views: 554

Re: Calcium with 6 "f8 and Ha

Absolutely stunning! And glad to see some new images taken by you. What kind of 6 inch apo are you using?
by bart1805
Tue Jun 04, 2019 5:23 am
Forum: This is SolarChat !!
Topic: Intes 703 for H-alpha, some experiments
Replies: 17
Views: 577

Re: Intes 703 for H-alpha, some experiments

Thanks Brian, Franco and Pedro. And thanks for the SPOD!
by bart1805
Mon Jun 03, 2019 5:50 pm
Forum: This is SolarChat !!
Topic: Intes 703 for H-alpha, some experiments
Replies: 17
Views: 577

Re: Intes 703 for H-alpha, some experiments

Thanks all!
I agree Franco, this could be the end of the 150mm Skywatcher as my H-alpha telescope.
Ronnie, hard to judge if it is a good etalon. I have two, this one seems a bit better than the other one. But the difference is not extreme.
by bart1805
Mon Jun 03, 2019 5:50 pm
Forum: SPoD Archive
Topic: Intes 703 for H-alpha, some experiments
Replies: 8
Views: 354

Re: Intes 703 for H-alpha, some experiments

Thanks all!
I agree Franco, this could be the end of the 150mm Skywatcher as my H-alpha telescope.
Ronnie, hard to judge if it is a good etalon. I have two, this one seems a bit better than the other one. But the difference is not extreme.
by bart1805
Mon Jun 03, 2019 9:16 am
Forum: This is SolarChat !!
Topic: Intes 703 for H-alpha, some experiments
Replies: 17
Views: 577

Re: Intes 703 for H-alpha, some experiments

marktownley wrote:
Mon Jun 03, 2019 5:47 am
These are great shots Bart! Looks like the Intes is a good scope.
Thanks Mark! And yes, even with the huge central obstruction the quality seems better than with the 150mm SW.
by bart1805
Mon Jun 03, 2019 9:16 am
Forum: SPoD Archive
Topic: Intes 703 for H-alpha, some experiments
Replies: 8
Views: 354

Re: Intes 703 for H-alpha, some experiments

marktownley wrote:
Mon Jun 03, 2019 5:47 am
These are great shots Bart! Looks like the Intes is a good scope.
Thanks Mark! And yes, even with the huge central obstruction the quality seems better than with the 150mm SW.
by bart1805
Sun Jun 02, 2019 10:00 pm
Forum: This is SolarChat !!
Topic: Intes 703 for H-alpha, some experiments
Replies: 17
Views: 577

Intes 703 for H-alpha, some experiments

Quite some experiments last days. This weekend I tried the Intes M703 for H-alpha. Way much easier to transport into the garden than the long 150mm Skywatcher achromat. The imaging train is way less heavy and the optical quality seems better than that of the 150mm f/8 SW. Here is how it looks. Made ...
by bart1805
Sun Jun 02, 2019 10:00 pm
Forum: SPoD Archive
Topic: Intes 703 for H-alpha, some experiments
Replies: 8
Views: 354

Intes 703 for H-alpha, some experiments

Quite some experiments last days. This weekend I tried the Intes M703 for H-alpha. Way much easier to transport into the garden than the long 150mm Skywatcher achromat. The imaging train is way less heavy and the optical quality seems better than that of the 150mm f/8 SW. Here is how it looks. Made ...
by bart1805
Wed May 22, 2019 8:31 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 50
Views: 2242

Re: 150 mm Solar Newton

Hello Bart, I like your filter support system :-) I have made no progress on my side since I was busy on other things. I've got to get into this in June. BTW, did you observe any temperature issue with the filter ? Best regards Christian Hi Christian, No heat issues at all at the moment. But it is ...