Search found 444 matches

by bart1805
Tue Mar 19, 2019 8:34 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

Hi Bart, Testing the concept with a 200 mm F/8 mirror (indeed a 300 / F5.5 stopped to 200 mm) is on my to-do list. I think it should be OK. Before that, I am working on another project related to very narrow band Ca K imaging. Interesting! And looking forward to see how you managed to apply the Blu...
by bart1805
Mon Mar 18, 2019 8:10 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

Thanks Christian. I talked about this project on a Dutch site and there someone suggested the same. But that was also after I had bathed the mirror in the ferric chloride..... It is not an exotic mirror, so someday I will find one to experiment the way you describe here. Mounting it before the secon...
by bart1805
Sun Mar 17, 2019 11:44 pm
Forum: Solar Scope Modifications
Topic: PST mod options and questions
Replies: 2
Views: 48

Re: PST mod options and questions

C8: did you use the etalon with or without the lenses? I would try with the lenses. But I think the C8 has to little back focus to be able to position the etalon 20 cm before the original focus position. Solarmax: it is just an etalon, not a lens! So yes, you definitely need your original PST lens. ...
by bart1805
Sun Mar 17, 2019 11:08 pm
Forum: Solar Scope Modifications
Topic: My ITF is not in the usual place
Replies: 13
Views: 113

Re: My ITF is not in the usual place

MalVeauX wrote:
Sun Mar 17, 2019 11:01 pm
Don't suppose there's an objective replacement? Nor support?

Take it, if we have an old PST etalon like this, it's basically only good for being harvest as a PST mod?

Very best,
Yep, you could replace the objective or use the etalon for a mod.
by bart1805
Sun Mar 17, 2019 10:22 pm
Forum: Solar Scope Modifications
Topic: My ITF is not in the usual place
Replies: 13
Views: 113

Re: My ITF is not in the usual place

marktownley wrote:
Sun Mar 17, 2019 9:51 pm
Yeah, you have an older PST, the ITF coating is on the objective, that's why it has that cloudy red colour.
Agree, but is the cloudiness caused by rust or is it ok?
by bart1805
Sun Mar 17, 2019 9:18 pm
Forum: SPoD Archive
Topic: Fulldisk Sun 14-03-2019
Replies: 8
Views: 41

Re: Fulldisk Sun 14-03-2019

What a beauty!
by bart1805
Sun Mar 17, 2019 9:18 pm
Forum: This is SolarChat !!
Topic: Fulldisk Sun 14-03-2019
Replies: 9
Views: 116

Re: Fulldisk Sun 14-03-2019

What a beauty!
by bart1805
Sun Mar 17, 2019 9:09 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine - 17th March
Replies: 12
Views: 124

Re: Sunday Sunshine - 17th March

Nice one Mark, is going to be a pleasure to image with this scope when the weather is better / the sun is more active.
by bart1805
Sun Mar 17, 2019 9:08 pm
Forum: Solar Scope Modifications
Topic: My ITF is not in the usual place
Replies: 13
Views: 113

Re: My ITF is not in the usual place

I think so too, when you look at the serial number it is quite low. Could you post a picture of the objective? BTW, it looks like a pretty well used PST.
by bart1805
Sun Mar 17, 2019 5:11 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

Thank you Raf. Will first try it like it is now. Then I will make a simple wooden box 21x21 cm. 3x3 cm bars will function as the trusses. It will be an ultra simple wooden Serrurier Truss telescope. In combination with the SSM I think it will work. In fact, thanks to the SSM, I kind of lost my fear ...
by bart1805
Sun Mar 17, 2019 7:52 am
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

How do you deal with the equally strong reflection from the back of the mirror blank? A wedged blank is possible, but difficult. Rough ground? A conical blank? Obsidian? Black paint wouldn't work. Hi Rusted, here is more information by Christian Viladrich about the back of the mirror. http://www.as...
by bart1805
Sat Mar 16, 2019 9:35 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

@Skyhawk: yes totally unsafe when you use it this way. You could also de-aluminize the secondary and use filters or work the way Raf described. For me it will be a imaging instrument, not a visual one. @Stu: the rain is (unfortunately) true.... Everything is ready now. Flocked the opposite of the fo...
by bart1805
Sat Mar 16, 2019 9:26 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

A solar newtonian is a very useful addition to a solar setup. I made my own and I am very happy, It is useful for both WL, K-line and Ca-H without the need of expensive ERFs. Diameters larger than 5 or 6 inch require an open tube and a careful design to avoid internal turbulence. It is safe also fo...
by bart1805
Fri Mar 15, 2019 4:54 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

Re: 150 mm Solar Newton

The same here. I am going to start relatively small and see for myself what are the good and bad points. And yes they are cheap. This complete scope will be less than a holder for a medium sized ERF. If all goes as planned I will be making my own 9 inch f/7 mirror in the last quarter of this year. L...
by bart1805
Fri Mar 15, 2019 3:36 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 23
Views: 322

150 mm Solar Newton

Yes, I would like to have a 150mm TOA. But then again: that is a dreamscope! So to move up in aperture for imaging the sun in CaK a Newton seems to be quite ideal. It has been done before, with bigger and smaller mirrors. When you de-aluminise only the primary and not the secondary, the effect can b...
by bart1805
Mon Mar 11, 2019 9:29 pm
Forum: Solar Software
Topic: Grasshopper 3 / Flycapture / Firecapture woes
Replies: 33
Views: 446

Re: Grasshopper 3 / Flycapture / Firecapture woes

Lost all my settings by doing that Bart, to avoid that I always save a copy of firecapture.ini After re-install copy the saved one in the new installation (make a copy of the new ini file first to be on the safe side) That should give you back all your settings ... Paul Thanks Paul, I am going to w...
by bart1805
Mon Mar 11, 2019 8:40 pm
Forum: Solar Software
Topic: Grasshopper 3 / Flycapture / Firecapture woes
Replies: 33
Views: 446

Re: Grasshopper 3 / Flycapture / Firecapture woes

Hi Alexandra, I don't know if it is the cable to externally power your PGR is the cause of the problems. I bought the same, have used it with the camera, and have the camera working again. FLIR released the new update in october last year. Was it then that the problems started? I had to remove my 2....
by bart1805
Sun Mar 10, 2019 10:10 pm
Forum: This is SolarChat !!
Topic: GAMMA SETTINGS QUESTION
Replies: 13
Views: 388

Re: GAMMA SETTINGS QUESTION

I get what you're saying Valery if i'm imaging a closeup mid disk Valery, however when I image and it includes the solar limb I find by dropping the gamma it just kills limb detail - spicules and proms... That is exactly what I was thinking. When the image includes the solar limb it is totally diff...
by bart1805
Sun Mar 10, 2019 9:42 pm
Forum: Solar Software
Topic: Grasshopper 3 / Flycapture / Firecapture woes
Replies: 33
Views: 446

Re: Grasshopper 3 / Flycapture / Firecapture woes

Hi Alexandra, are you running the 32 or 64 bit version of FireCapture? Could it be that you are running the 32 bit version and downloaded the 64 bit version of the SDK? Had the same problem, but after removing Firecapture and reinstalling the latest version, plus after that downloading the SDK you m...
by bart1805
Thu Mar 07, 2019 10:48 pm
Forum: This is SolarChat !!
Topic: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019
Replies: 17
Views: 261

Re: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019

You are having fun with the new equipment Marty! Nice to see. Do you set Gamma at 100 just to focus and set it at neutral again when imaging? Nice lifting prominence! Double lines indicate for me it is a bit over processed. I use the adaptive mode in IMPPG, then you can define which bit of the image...
by bart1805
Thu Mar 07, 2019 10:15 pm
Forum: This is SolarChat !!
Topic: Sol from the 6th of March 2019.
Replies: 10
Views: 152

Re: Sol from the 6th of March 2019.

Beautiful as always Eric, thanks!
Do you use a start and threshold value for the seeing when imaging with the SSM?
by bart1805
Thu Mar 07, 2019 10:09 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt Calcium filter
Replies: 7
Views: 223

Re: Lunt Calcium filter

I suspect this is in another thread, but have people confirmed that the Lunt ERF doesn't cover a frequency otherwise missed by the main components? Lunt tends to double cover frequencies for eye safety (these are rated for visual), so I would guess it is all covered. I wasn't going to remove the Lu...
by bart1805
Sat Mar 02, 2019 10:27 am
Forum: Solar Scope Modifications
Topic: Low cost DIY Camera Tilt Adaptor
Replies: 4
Views: 157

Re: Low cost DIY Camera Tilt Adaptor

Nice one Stu, thanks for sharing. Any idea how much degrees of tilt you required?