Search found 345 matches

by krakatoa1883
Mon May 29, 2017 11:13 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Different Ca-K options, differences?
Replies: 57
Views: 6020

Re: Different Ca-K options, differences?

If you look at my Google+ page linked below you can see some images I made with my Baader K filter and compare it to images taken through a more expensive Ca-K module. The filter is not bad, but as Alexandra points out it has a 80 A wide band so it delivers less contrast and less detail compared to ...
by krakatoa1883
Thu May 04, 2017 11:33 am
Forum: This is SolarChat !!
Topic: Our achievements in solar imaging. Read and see!
Replies: 12
Views: 2137

Re: Our achievements in solar imaging. Read and see!

Remarkable results indeed, very powerful setup.

BTW, the best Earth-based images of the Sun are those taken from the 98cm Swedish Solar Telescope in La Palma. They are truly incredible. Some samples can be seen in here and here.
by krakatoa1883
Thu Apr 06, 2017 11:08 am
Forum: This is SolarChat !!
Topic: Quark and TS 115 APO
Replies: 32
Views: 2397

Re: Quark and TS 115 APO

I used Quark Chromo for some time with a scope very similar to the 115 apo with decent results, but my experience is that the Combo version + a good external telecentric is better. Quality may vary, however, try two or three units if you can and choose the best one. Or follow Alexandra's recommendat...
by krakatoa1883
Thu Apr 06, 2017 10:39 am
Forum: This is SolarChat !!
Topic: Eruptions on April 3rd 2017
Replies: 5
Views: 421

Re: Eruptions on April 3rd 2017

Thanks, Alexandra, I returned home from office just in time to catch the event. AR12645 is now almost on the limb...
by krakatoa1883
Wed Apr 05, 2017 7:11 pm
Forum: This is SolarChat !!
Topic: Eruptions on April 3rd 2017
Replies: 5
Views: 421

Eruptions on April 3rd 2017

Images from April 3rd around 15:44UT (late afternoon in Europe) shortly after one of the last M-class flares from AR12644. Visually it was even more impressive, particularly while following the evolution of the long jet on the west limb. All images with Quark Chromo. Thanks for looking!
by krakatoa1883
Fri Mar 31, 2017 4:49 pm
Forum: This is SolarChat !!
Topic: AR12645 on WL and Halpha
Replies: 6
Views: 538

Re: AR12645 on WL and Halpha

In principle I would not believe too, Valery, but this is exactly what happens with my unit (may be a defective one ?). Just look at the raw images below taken during the same session: why with the native telecentric my Chromo doesn't work with the front D-ERF installed ? do you have an explanation ...
by krakatoa1883
Fri Mar 31, 2017 8:44 am
Forum: This is SolarChat !!
Topic: AR12645 on WL and Halpha
Replies: 6
Views: 538

AR12645 on WL and Halpha

I imaged the above active region in WL on 29th March and in H-alpha on 30th. WL image has been taken in fair to poor seeing conditions with 150 mm f/5 refractor stopped to 140 mm, the diameter of the front Astrosolar filter, 4x Astro Engineering Barlow. In H-alpha the one below is my first image wit...
by krakatoa1883
Sun Mar 26, 2017 4:48 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Quark problems solved
Replies: 2
Views: 979

Quark problems solved

Hi to all In this topic https://solarchatforum.com/viewtopic.php?f=10&t=20849 I explained my troubles with Daystar Quark chromo: it refused to tune properly when used with my f/5 refractor and an UV/IR cut as ERF before the diagonal. In an attempt to overcome the problem and to prevent heat from ent...
by krakatoa1883
Tue Jan 10, 2017 3:28 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Problems with Quark and Baader filters
Replies: 17
Views: 3101

Re: Problems with Quark and Baader filters

Yes, of course I agree. I forgot to mention that usually I stop down the scope to 110mm in order to have a better f/ratio for the Quark. What surprised me is that notwithstanding Baader filters are advertised for very fast ratios they seem not suitable if placed just in front of the diagonal in a f/...
by krakatoa1883
Sat Oct 08, 2016 7:16 pm
Forum: This is SolarChat !!
Topic: AR 12599 in WL
Replies: 2
Views: 274

AR 12599 in WL

Hello everybody

I have taken an image of this nice group with many nuclei and a well developed filamentary penumbra. It is followed by a cloud of tiny pores, I am curious to see how they will develop in the next hours.

150 mm refractor + Baader Continuum.

Raf
by krakatoa1883
Sun Sep 18, 2016 11:51 am
Forum: This is SolarChat !!
Topic: Animation of 10th Sept. prominence
Replies: 7
Views: 638

Re: Animation of 10th Sept. prominence

Fantastic! How long is the time span covered by the animation ?
by krakatoa1883
Wed Sep 14, 2016 10:53 am
Forum: This is SolarChat !!
Topic: Quark focusing problem
Replies: 30
Views: 2325

Re: Quark focusing problem

My "dream" scope with the Quark would be a 115mm f/7 achromat(not an APO),but I do not see anyone that makes an achromat with this configuration in the US. Why don't use a bigger refractor stopped down to any diameter you like ? I use a 150 mm f/5 achromat branded Skywatcher (black tube version). I...
by krakatoa1883
Fri Sep 02, 2016 4:16 pm
Forum: This is SolarChat !!
Topic: AR 12585 in WL, September 2nd
Replies: 4
Views: 544

Re: AR 12585 in WL, September 2nd

Thanks Franco, I'm quite happy of this newtonian, for few euros I have been able to convert a cheap photographic mirror into a good scope for WL and also for CaK.
by krakatoa1883
Fri Sep 02, 2016 9:13 am
Forum: This is SolarChat !!
Topic: AR 12585 in WL, September 2nd
Replies: 4
Views: 544

AR 12585 in WL, September 2nd

A nice group, not an exceptional one if we were close to a solar maximum, however being the solar activity slowing down this AR is a welcomed one. I have taken this image in fair seeing with my 130 mm solar newtonian and Chameleon mono CCD.
AR12585.jpg
AR12585.jpg (120.86 KiB) Viewed 544 times
by krakatoa1883
Mon Aug 22, 2016 6:14 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Problems with Quark and Baader filters
Replies: 17
Views: 3101

Problems with Quark and Baader filters

I purchased a 150 mm refractor to be used with my Daystar Quark. I am planning to mount a 110 or 135 mm front ERF but in the meantime I am using a simple Baader 2" UV/IR cut in front of the diagonal. Few days ago I tried (in the same position of the UV/IR cut) a Baader 35nm H-Alpha filter that someo...
by krakatoa1883
Mon Aug 15, 2016 12:21 pm
Forum: This is SolarChat !!
Topic: OK so what I am doing wrong?
Replies: 32
Views: 3133

Re: OK so what I am doing wrong?

The Daystar Quark is back, it worked great last August-October then March I couldn't get it on band. Last August it was great on +4, this March it needed a +6 or +7 (there isn't one). So it went back to Daystar and it has come back ....... exactly the same :( Hi Alexandra, the +5 image doesn't seem...
by krakatoa1883
Sun Aug 14, 2016 6:30 pm
Forum: This is SolarChat !!
Topic: Two small ARs
Replies: 6
Views: 526

Re: Two small ARs

Thanks, Brian, I made the solar newtonian from an ordinary photographic reflector following a project that I found here.
by krakatoa1883
Sun Aug 14, 2016 2:27 pm
Forum: This is SolarChat !!
Topic: Two small ARs
Replies: 6
Views: 526

Two small ARs

A couple of WL images of today, one of AR12576 and one of AR12577, both with my 130 mm f/5 solar newtonian @ f/25 with Continuum filter 12576_5.jpg 12577_4.jpg the following one is of AR12576 in H-alfa with 150 mm f/5 refractor (stopped down to 120 mm) and Quark Chromosphere at f/35. 12576_h1.jpg Th...
by krakatoa1883
Fri Jul 22, 2016 6:12 pm
Forum: This is SolarChat !!
Topic: Too hot for me.....and the Quark
Replies: 35
Views: 2360

Re: Too hot for me.....and the Quark

It only powers down when using the battery pack - indicating that no power is being drawn. When powered via the mains adaptor it came with it stays 'powered' but slowly drifts off band. If I remove power completely......... then it stays 'on band' for a very long time. Suggests to me that the 'oven...
by krakatoa1883
Wed Jun 15, 2016 7:13 am
Forum: This is SolarChat !!
Topic: First light, (ok, second) with Lunt 50mm Ha
Replies: 10
Views: 707

Re: First light, (ok, second) with Lunt 50mm Ha

Nice image, Mattias. Have you had any trouble in connecting the camera to the scope ? I hade the old Lunt 35 and I remember that taking images was somehow tricky.

Raf