Search found 785 matches

by brianb11213
Tue Feb 04, 2014 12:51 pm
Forum: This is SolarChat !!
Topic: CaK processing
Replies: 1
Views: 345

CaK processing

Following on from Alexandra's thread & sullij1's comments, I thought it might be useful to show the various steps in the processing of my CaK images. First frame from raw video; best frame from raw video; raw stack; stack after wavelets; final after post processing. These were done with a 2x barlow ...
by brianb11213
Tue Feb 04, 2014 9:34 am
Forum: This is SolarChat !!
Topic: First light with the Lunt Calcium K
Replies: 29
Views: 1196

Re: First light with the Lunt Calcium K

Last- 2X seems to be in a bad place for CaK. All my 2X images have a very dark and hard look to them. Seems to be the nature of the CaK beast at 2X. Good images a 2X require very good seeing and delicate processing. I really think 2X is harder than 5X. Rather than 2X I find that shooting a native f...
by brianb11213
Mon Feb 03, 2014 9:42 am
Forum: This is SolarChat !!
Topic: First light with the Lunt Calcium K
Replies: 29
Views: 1196

Re: First light with the Lunt Calcium K

Hi Alexandra, The White Light images are top of world class images. I doubt any one with the same equipment could surpass that result. Mmmmmm the Cal k is a bit how's your farther. Something is wrong there. I concur. Only thing I can offer is I always stop down my 127mm to 90mm without fail. Might ...
by brianb11213
Sun Feb 02, 2014 10:42 am
Forum: This is SolarChat !!
Topic: Where to get Sun spot names from?
Replies: 5
Views: 802

Re: Where to get Sun spot names from?

The site I like for this is Solar Terrestrial Activity Report which carries a good overall view of solar activity & space weather, with a large image labelled with active area names (and its own labels of ARs which have not yet been officially numbered).
by brianb11213
Thu Jan 30, 2014 12:50 am
Forum: This is SolarChat !!
Topic: 2 Barlows (x2 each) = x4 with 40mm??
Replies: 5
Views: 608

Re: 2 Barlows (x2 each) = x4 with 40mm??

I think 4x the native focal length with a PST will be too much, but give it a try and see :) I agree. The basic issue here is that the magnification of a "2x" barlow depends on the position of the sensor, cameras usually have the focal plane further back than the eyepiece & when used with C mount c...
by brianb11213
Wed Jan 29, 2014 3:08 pm
Forum: This is SolarChat !!
Topic: Calcium Bag flats - Results and Techniques
Replies: 9
Views: 321

Re: Calcium Bag flats - Results and Techniques

I think I might make a cardboard filter cell for the bag as I can see my bag blowing away in the wind :)
Why not just fix the bag / t-shirt over the objective with a rubber band?
by brianb11213
Sat Jan 25, 2014 7:26 pm
Forum: This is SolarChat !!
Topic: Five solar scopes. How did this happen?
Replies: 4
Views: 572

Re: Five solar scopes. How did this happen?

I,ve worked out they multiply in the telescope cupboard. Sounds like selling the offspring could be a nice little earner. :evil: Unfortunately mine seem to be sterile ... I have a PST CaK, a Lunt 60mm with CaK module (which however usually gets used in my WO FLT 110), a Solarscope SV60 scope & Sola...
by brianb11213
Fri Jan 24, 2014 8:09 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Ca K telescope
Replies: 82
Views: 6896

Re: Ca K telescope

There is a downside to ordering from Germany.... I've not a clue what I am meant to do with it and what not to do with it but I hope I don't blind myself in the process. No chance of blinding yourself. I take it you know that there is little chance of actually seeing anything in CaK light, it's rea...
by brianb11213
Fri Jan 24, 2014 12:00 am
Forum: This is SolarChat !!
Topic: New to the forums and first Prom (comments, advice?)
Replies: 15
Views: 635

Re: New to the forums and first Prom (comments, advice?)

I use FireCapture which I find to be a pretty good program. Is it ok to set the gain as low as possible to the point that the Sun goes dark or is that too much? I use IC Capture (supplied with my Imaging Source cameras). If FireCapture doesn't have a "live histogram" then you'll have to judge the s...
by brianb11213
Thu Jan 23, 2014 11:18 pm
Forum: This is SolarChat !!
Topic: New to the forums and first Prom (comments, advice?)
Replies: 15
Views: 635

Re: New to the forums and first Prom (comments, advice?)

Sorry I meant when I just capture the disc and focus on that. So either the disc with details or just a prom. Yeah ... to get disc details set the exposure using the histogram with the right hand "tail" at about the 75% - 80% brightness point. If you have seperate gain & exposure time set the gain ...
by brianb11213
Thu Jan 23, 2014 11:06 pm
Forum: This is SolarChat !!
Topic: New to the forums and first Prom (comments, advice?)
Replies: 15
Views: 635

Re: New to the forums and first Prom (comments, advice?)

it seems when I add some wavelets in Registax the image looks to be over sharpened even at the slightest touch. Also some parts of the Sun have no detail. Does anyone have any experience in using this camera? I bought it based on the good reviews and great price. I don't use that camera but your pr...
by brianb11213
Thu Jan 23, 2014 7:31 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: TiO and He filters?
Replies: 7
Views: 1030

Re: TiO and He filters?

Thanks guys. Think I've made up my mind. Having just bought the LS152 and a white light wedge to go with it (comes with an ND3 filter) I think that will quite do for now. Try a Baader Solar Continuum or OIII nebula filter. Or even an ordinary green (Wratten #58). Any of these will improve the "whit...
by brianb11213
Fri Jan 17, 2014 8:50 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Ca K telescope
Replies: 82
Views: 6896

Re: Ca K telescope

Is there any particular reason you don't like the alt/az other than field rotation? We have asked for a quote from Rick for a Celestron Omni 102 and an iOptron Minitower Pro. The iOptron MT Pro gets a good review from Ian Morison and I remember him loving it and showing it off at a 'show and tell' ...
by brianb11213
Wed Jan 15, 2014 10:17 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Names of the equipment
Replies: 5
Views: 704

Re: Names of the equipment

Spectroscope is an instrument for showing the spectrum of an object Spectroscopy is using a spectroscope Spectrometer / spectrometry is when the output of a spectroscope is handled digitally (wavelengths rather than colours) Spectrograph is a photographic record of the output of a spectroscope A spe...
by brianb11213
Fri Jan 10, 2014 12:18 pm
Forum: Forum Support Issues
Topic: Very slow
Replies: 55
Views: 7515

Re: Very slow

No particular problem here. The large numbers of smiley graphics, avatar images etc. does slow the thing down a little but it shouldn't be enough to cause noticeable degradation on a broadband link with reasonable transmission speed. I did have an issue with ALL sites with a system running Windoze w...
by brianb11213
Fri Jan 10, 2014 1:51 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: AR1944 CME impact!
Replies: 11
Views: 1069

Re: AR1944 CME impact!

ATM (0150 UT 10 Jan) Spaceweather is showing KP=2, Bz=2.0 nT northward (wrong direction). This is hardly storm condition.
by brianb11213
Tue Jan 07, 2014 8:53 am
Forum: This is SolarChat !!
Topic: Flat Field for solar
Replies: 11
Views: 316

Re: Flat Field for solar

There are millions of these bags here. We use them for grocery shopping. They beakdown with direct sunlight & turn to nothing in a matter of weeks :) There are millions of them here too. Mostly ripped into shreds but still stuck in hedges etc. They do break down in direct sunlight but the process s...
by brianb11213
Mon Jan 06, 2014 6:43 pm
Forum: This is SolarChat !!
Topic: Flat Field for solar
Replies: 11
Views: 316

Re: Flat Field for solar

shoot 25 frames for a flat. Thats all you need. Dont get carried away and make a monster AVI for flats! Well, yes, you can accept 100% of the frames when making a flat, but you need to shoot & stack enough frames for the resulting flat frame image to be essentially free of quantum noise ... the num...
by brianb11213
Sun Dec 22, 2013 9:43 am
Forum: This is SolarChat !!
Topic: HAPPY HOLIDAYS!!!
Replies: 17
Views: 504

Re: HAPPY HOLIDAYS!!!

Yeah, happy hollydaze - and a peaceful & sustainably prosperous New Year.
by brianb11213
Sat Dec 21, 2013 12:37 am
Forum: This is SolarChat !!
Topic: First Contact cleaner
Replies: 16
Views: 545

Re: First Contact cleaner

I strip my camera's, blast the [hot place] out of the internals with 100 PSI from a compressor (NEVER shooting towards the chip for obvious reasons!?) ... Static can be a problem though but luckily I stay clear of things that cause it (mainly plastics) plus I always do myself by grounding myself be...
by brianb11213
Sat Dec 21, 2013 12:33 am
Forum: This is SolarChat !!
Topic: First Contact cleaner
Replies: 16
Views: 545

Re: First Contact cleaner

I have just been researching the anti static guns with regard to cleaning ccd chips and it has been suggested that they could harm the ccd circuitry and that they are not effective on glass which covers the chip only plastic such as old records. Well, glass is usually a reasonable insulator. The an...
by brianb11213
Tue Dec 17, 2013 12:27 am
Forum: This is SolarChat !!
Topic: Back to First Principles - 16 Dec.
Replies: 19
Views: 388

Re: Back to First Principles - 16 Dec.

Nice work George. I guess we all are going to be slightly variant in the way we capture, & consequent post processing. In my case, I want it as FLAT AS A TACK at capture time. I'll add my 'gain' in after the fact because I can vary it. You can't, once it's in the capture. As for dynamic range, it's...
by brianb11213
Sun Dec 08, 2013 2:35 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: IDAS UHB-RS Solar Filter
Replies: 3
Views: 913

Re: IDAS UHB-RS Solar Filter

These seem to be "camera filters" ... TBH I'd be worried about the optical properties if imaging at long focal length / viewing at high magnification. I've too much experience of glass filters failing to focus sharply or even displaying multiple images to have faith in anything other than Baader sol...
by brianb11213
Sat Dec 07, 2013 9:01 am
Forum: This is SolarChat !!
Topic: What size eyepiece
Replies: 4
Views: 280

Re: What size eyepiece

A good approximation: the Sun's angular diameter is about half a degree so the apparent angular size of the Sun, in degrees, is half the magnification. So, if your eyepiece has a 50 degree apparent field of view, the solar disk should fill the field at a magnification of about 100. In practice you'd...
by brianb11213
Thu Dec 05, 2013 11:58 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: New Version of IC capture from Imaging Source
Replies: 2
Views: 825

Re: New Version of IC capture from Imaging Source

What's the differences with the more recent version? I don't know, but I would be surprised if they were significant. I got 2.0 with my DMK41, 2.1 with my DMK21AU04 and 2.2 when I upgraded the 21 to the 618 version. Apart from 2.1 defaulting to a compreesed video format (insert suitable anger emoti...