Search found 200 matches

by Astrograph
Fri Jul 06, 2018 4:46 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt or Quark?
Replies: 6
Views: 1051

Re: Lunt or Quark?

As has already been said, the Lunt will offer you easy full disk views, the Quark will be close up. Bear in mind you might have a few attempts at getting a Quark that is acceptably uniform. A Solarscope (as in the brand) will be 10x better quality than the Lunt (or a Coronado). If spending Solarscop...
by Astrograph
Fri Jul 06, 2018 4:10 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Can i use the Daystar Quantum 0,5 withe only Baader UV/IR?
Replies: 4
Views: 923

Re: Can i use the Daystar Quantum 0,5 withe only Baader UV/IR?

The Baader UV/IR on paper blocks more UV but in practice does not seem to be good for use as a basic internal ERF. Many years ago we suggested this filter and one day put a polariser behind it to tame the light level a little. The scope was a 100mm. The polariser did nothing. When checked its coatin...
by Astrograph
Sat May 12, 2018 1:06 pm
Forum: This is SolarChat !!
Topic: C11 out for a third time and it gets better and better!
Replies: 21
Views: 1309

Re: C11 out for a third time and it gets better and better!

Great Images Alexandra. It must be all thanks to those screws ;) !
by Astrograph
Sat May 12, 2018 12:38 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: The ultimate solar imagers filter?? The ultimate visual?
Replies: 2
Views: 621

Re: The ultimate solar imagers filter?? The ultimate visual?

There you go folks, you now have the inside info one what makes these filters special. And to make them a little more special there are then some dedicated accessories. - All the filters come with SC threads that feature T2 inserts so you have two, well supported ways to attach them. No need to orde...
by Astrograph
Fri May 11, 2018 10:40 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Baader Triband SCT
Replies: 13
Views: 1606

Re: Baader Triband SCT

But its pretty. It has colour and arrows and stuff.....

Do you think when they did the three colour TRI part of the logo it was the same person? Purple for Calcium. Yep. Red for Ha. Yep. Yellow for Continuum, err. Ah but of course, the Sun's yellow :)
by Astrograph
Fri May 11, 2018 1:53 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Baader Triband SCT
Replies: 13
Views: 1606

Re: Baader Triband SCT

An easy mistake as the scope is not black.
by Astrograph
Fri May 11, 2018 12:09 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: The ultimate solar imagers filter?? The ultimate visual?
Replies: 2
Views: 621

The ultimate solar imagers filter?? The ultimate visual?

Solar Spectrum filters tend to go unnoticed, probably because you can never buy one normally without waiting for a very long time! Well a few have quietly slipped out of the factory and are waiting patiently for new homes. For the imagers among you, we have access to 6 (six - in case you missed it) ...
by Astrograph
Fri May 11, 2018 11:47 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Baader Triband SCT
Replies: 13
Views: 1606

Re: Baader Triband SCT

Speaking as both an Airylab and Baader Solar reseller, I can assure you that Frederics (Airylab) product is nothing to do with Baaders and its a lot harder to do all this than is being suggested. Low PV maybe but not L4+. It is also easy to see the difference visually between an L4 Glass ERF and an ...
by Astrograph
Wed May 02, 2018 3:25 pm
Forum: This is SolarChat !!
Topic: Does a reducer work to achieve F10?
Replies: 20
Views: 1332

Re: Does a reducer work to achieve F10?

PST etalon with its collimating lens on the back of an F10 scope should allow it to work correctly. Obviously a front ERF is needed on the Mak.
by Astrograph
Thu Dec 28, 2017 2:19 pm
Forum: This is SolarChat !!
Topic: Daystar 80mm Quark bundle scope questions
Replies: 17
Views: 2147

Re: Daystar 80mm Quark bundle scope questions

I'd tend to agree with Christian on this, but visually once the F ratio gets to F28+ you begin to see what the filter is capable of. Quarks are hit and miss anyway but using an otherwise genuine chromosphere filter on say an 80mm F6 (F25.8) results in a featureless red ball. The same filter on an F7...
by Astrograph
Tue Dec 19, 2017 9:07 pm
Forum: This is SolarChat !!
Topic: Daystar 80mm Quark bundle scope questions
Replies: 17
Views: 2147

Re: Daystar 80mm Quark bundle scope questions

Hi, welcome to Solarchat!

For a 120mm Refractor the 35nm Ha filter will look after your Quark better than a UV/IR cut. Understand though that a good front mounted filter (like Baaders D-ERF) will give you sharper / better contrast compared to an internal filter.
by Astrograph
Tue Oct 17, 2017 10:10 pm
Forum: This is SolarChat !!
Topic: Project Sunbyte is soon to fly
Replies: 9
Views: 705

Re: Project Sunbyte is soon to fly

Valery, I guess this project is part practical and part teaching students to solve problems. I told them from day 1 over six months ago that the very first thing they should do is try taking pictures of the sun from the ground. Understand what has to be done and then think if hanging the scope from ...
by Astrograph
Tue Oct 17, 2017 4:25 pm
Forum: This is SolarChat !!
Topic: Project Sunbyte is soon to fly
Replies: 9
Views: 705

Re: Project Sunbyte is soon to fly

The custom etalon is 0.3A. It is 32mm and the RG spec is uniform across 90%. It is not flying with this yet. The filter is designed to operate at 10C on just 40w of power. It has to be tested to see if 10C can be maintained for the flight duration (up to 5 hours with climb time) on that amount of po...
by Astrograph
Tue Oct 17, 2017 11:41 am
Forum: This is SolarChat !!
Topic: Project Sunbyte is soon to fly
Replies: 9
Views: 705

Re: Project Sunbyte is soon to fly

Given the weather, that's not a bad idea Aleaxandra. I think we can make it work in a simpler way
Sunbyte on the cheap.jpg
Sunbyte on the cheap.jpg (123.34 KiB) Viewed 700 times
by Astrograph
Tue Oct 17, 2017 11:06 am
Forum: This is SolarChat !!
Topic: Project Sunbyte is soon to fly
Replies: 9
Views: 705

Project Sunbyte is soon to fly

Our collaboration with Sheffield University and there Sunbyte Project is no very close to getting airborne. The team are at the REXUS/BEXUS facility in Sweden. For daily updates please see the FB page https://www.facebook.com/projectsunbyte/ and the main website http://sunbyte.group.shef.ac.uk/ Brie...
by Astrograph
Fri Aug 25, 2017 3:12 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Re: Solar Spectrum filters available from stock!

A 0.2A can probably be done to special order. I happen to know that there are two 'really good' 0.25A Solar Observer 1's available (19mm Standard Grade). These would be advertised as 0.3A. If you want a 0.2 RG32 then this can be put on order but you may have to wait a long time. Happy to find out fo...
by Astrograph
Thu Aug 24, 2017 11:46 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: ASI 174MM and Firecapture - endless issues - looking for alternatives!
Replies: 8
Views: 1401

Re: ASI 174MM and Firecapture - endless issues - looking for alternatives!

As a supplier of both ZWO and PGR/FLIR cameras and one that tests with Firecapture, SharpCap and Genika, here are my two pennies worth 1 - Firecapture needs the latest version of Java running on your PC or it will do some strange things. 2 - Sharpcap should run the ASI natively. 3 - Genika should ru...
by Astrograph
Tue Aug 15, 2017 9:45 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Re: Solar Spectrum filters available from stock!

So there you have it folks, all the info you need about SS filters straight from the horses mouth.

Thanks for that Mark
by Astrograph
Sat Aug 05, 2017 3:57 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: MAK 90mm for solar
Replies: 12
Views: 1672

Re: MAK 90mm for solar

There is a version of the Combo made for Questar but this was also to be used with a front ERF. If you have a Maksutov with just a coated spot for the secondary then it will depend on the coating as much as anything else. If the coating is aluminium then it should reflect UV down to about 200nm quit...
by Astrograph
Sat Aug 05, 2017 3:29 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Re: Solar Spectrum filters available from stock!

Valery

I will ask about the measured uniformity. May take some time to get an answer though.

Mark

Don't we all? £10 would be nice.....
by Astrograph
Fri Aug 04, 2017 10:00 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Re: Solar Spectrum filters available from stock!

Luca's Solar Spectrum is an RG46 and therefore equivalent to a 'PE'. It should therefore be completely uniform. Any non RG / PE type from anyone might be uniform but could also have some non-uniformity. This is completely normal and to be expected from any 'normal grade' solar filter, because Mica i...
by Astrograph
Thu Aug 03, 2017 2:24 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Re: Solar Spectrum filters available from stock!

Hi Valery, Prices. These are all on my website and include VAT @ 20% (/1.2 to remove). Subject to change as rates move but stable for the moment. Types. Basically 'Observer' models and Research Grade have Active heating and cooling. The Sundancer is heated only but also features tilt tuning. Daystar...
by Astrograph
Thu Aug 03, 2017 1:07 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar Spectrum filters available from stock!
Replies: 15
Views: 1838

Solar Spectrum filters available from stock!

Solar Spectrum filters, normally made from unobtanium, which usually take somewhere between many, many months or even years so I hear are available from stock! Currently available are 46mm Research Grade 0.5A 32mm Research Grade 0.3A, 0.5A, 0.65A 25mm Advanced Observer 0.5A 19mm Observer 0.65A 25mm ...
by Astrograph
Thu Aug 03, 2017 12:54 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Not uniform contrast with my Daystar Quark
Replies: 17
Views: 2403

Re: Not uniform contrast with my Daystar Quark

Despite us having parted company with Daystar, I should point out that Quark etalons are not 'rejects'. What they are, are mass produced and subject to minimal testing. Jen Winter actually explained the basics of Quark production in a CN thread. Now whether you believe everything said in a forum is ...
by Astrograph
Wed Jun 28, 2017 3:57 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Different Ca-K options, differences?
Replies: 57
Views: 6025

Re: Different Ca-K options, differences?

You are fortunate that it focuses. It is not always the case. Have you been using your Calcium Quark on a Newtonian with no ERF or are you talking about one with a mirror with no coating? Lunt also offer a version of the CaK module as a diagonal. Obviously that only suits certain scopes too but refl...