Recently Browsing 0 members
No registered users viewing this page.
One of the best cameras for Ha solar. With a 1/2" chip and large pixels, I used to fit the entire disc with lunt 35. I can still do a full disk with a quark using my TS 60ED and a reducer on the camera nose. This camera does not suffer from Newton's rings so saves a lot of time which is otherwise wasted in setting up a tilt adjuster.
Boxed with the cable, probably i have the disc as well, but not sure where in my astro dump it is. Software is available from the website though.
the prominences of the previous days on limb of the sun now are visible as filaments on the solar disc itself. Lacking amazing prominences on the limb, I hsve been concentrating on sketching the filaments this time. Compared with my previous sketches they moved from the right towards the middle. Note that my sketches are usually left-right-flipped due to the telescope's mirror.
So here's the result:
Telescope: Lunt LS 50 THa B600 PT
Eyepiece: Celestron X-cel 10mm
Date & Time: June 7th, 2019 / 1000-1030 CEST
Location: home terrace, Dusseldorf region, Germany
Technique: reddish and black Koh-i-Noor soft pastels and pastel pens on light-grey Hahnemühle Ingres mould-made pastel paper
Clear and sunny skies!
I'm a newbie to mono imaging and am having trouble with circular/ring shapes in my subs. The circles are particularly pronounced after stacking my Lum subs but also appear in blue stacks. At the moment, this is making my lum subs unusable and I'm only just managing to put together RGB images.
I'm using an ZWO ASI1600mm with ZWO filter wheel and filters (36mm unmounted).
The attached TIF (LumStack.TIF) is 10x150sec of Lum subs stacked in DSS. The circles aren't very pronounced at this stage but after DBE and STF (see second SunflowerLum.jpg) the circles are very clear to see.
I've also attached a stack of Lum data on Bode's galaxy which shows the same issue.
Does anyone have any ideas what could be causing these?
Thanks in advance
For sale is my Daystar Quark, Chromosphere version. It has had infrequent use and I can't justify keeping it. Works superbly with my ED80. It was purchased in July 2017 from Widescreen Centre so is still well within the 5 year warranty period. I am looking for £625 posted to a UK mainland address. Everything is complete in the box including instructions, USB cable and power adaptor. Payment by bank transfer please.
Last summer I spent a lot of time observing and imaging the sun with a WO Z61 and Quark Chromosphere. Recently I have acquired a WO Z103 and if the sun ever comes out I would like to use this refractor for imaging as well. Question I have is with the wider aperture of the Z103, is it safe to use with the Quark and is an energy rejection filter needed?
I previously read that it should be ok up to c100mm without an ERF but I cannot see any reference to this on now on the Daystar website.