Getting In Closer - Saturday Sunshine 17th June

[marktownley]

This weekend was forecast to be glorious, so I was up early on saturday to try and get the best of the seeing with temperatures getting up to 28c. Properly blue skies throughout the day meant I was able to image in a range of wavelengths and also at a range of scales.

First off the CaK, and the full disk with the 40mm scope @ 500mm fl with the homebrew CaK filter and the PGR CH3 camera.

cak-disk-bw by Mark Townley, on Flickr

cak-disk-colour by Mark Townley, on Flickr

Then, progressively zooming in on the interesting bits with the 100mm Tal refractor running at 80mm aperture (tri-band ERF).

ar12662-cak-80mm-bw by Mark Townley, on Flickr

ar12662-cak-80mm-colour by Mark Townley, on Flickr

ar12663-CaK-80mm-bw by Mark Townley, on Flickr

ar12663-CaK-80mm-colour by Mark Townley, on Flickr

ar12662-cak-80mm-close-bw by Mark Townley, on Flickr

ar12662-cak-80mm-close-colour by Mark Townley, on Flickr

ar12663-CaK-80mm-close-bw by Mark Townley, on Flickr

ar12663-CaK-80mm-close-colour by Mark Townley, on Flickr

plage-cak-bw by Mark Townley, on Flickr

plage-cak-colour by Mark Townley, on Flickr

In Ha, there was a range of things to be seen. First off with the 56mm scope, double stacked quark Baader solar telecompressor (0.7x) and CH3 with 2x2 binning.

ha-full-disk-bw by Mark Townley, on Flickr

ha-full-disk-colour by Mark Townley, on Flickr

Moving up a notch now to the 100mm Tal, same etalon / camera combination, somewhere around 3m focal length.

ar12662-100mm-bw by Mark Townley, on Flickr

ar12662-100mm-colour by Mark Townley, on Flickr

ar12663-100mm-bw by Mark Townley, on Flickr

ar12663-100mm-colour by Mark Townley, on Flickr

The seeing is always the limiter, but you have to try, now the 203mm Airylab HaT, same etalon / camera setup, focal length somewhere just over 6m.

ar12662-hat-red-bw by Mark Townley, on Flickr

ar12662-hat-red-colour by Mark Townley, on Flickr

Then, same again, but without the solar telecompressor, so focal length getting close to 9m.

ar12662-Hat-bw by Mark Townley, on Flickr

ar12662-Hat-colour by Mark Townley, on Flickr

ar12663-hat-bw by Mark Townley, on Flickr

ar12663-hat-colour by Mark Townley, on Flickr

Hope you like! Todays seeing was better first thing, so more to come later on.

Mark

[David_The_Bears_Fan]

Wow, fantastic set Mark. you weren't kidding about getting in close

[Valery]

Nice series of sun images, Mark!

The only info I was not able to find is what the etalons have you used for this session.

Thanks for sharing.


Valery

[Derek Klepp]

Definitely worth the try Mark and good to see you getting in a very comprehensive session.

[marktownley]

Thanks guys!

The only info I was not able to find is what the etalons have you used for this session.

It's my trusty Quark / PST etalon combo Valery. Using this, with 2x2 binning on the PGR CH3 and gain applied (camera powered by 12v battery for less noise) means I can run at about 3-4ms exposure time at ~9m focal length, throw in i've now managed to get the camera capturing at 120fps all adds up to easier imaging at these longer focal lengths.

[ffellah]

A great and fruitful session, Mark !

It is nice to see in one run different frequencies and equipment producing different results and being able to compare in one scroll.

Franco

[gabrieli]

Hi, Mark

I like the scale and especially the contrast in your images.

I'm assuming from the info in your reply to Valery that you are using the original Quark + PST etalon. Does it matter whether you sjip the Quark into the PST etalon or the other way around ? My PST adaptors (2") make it easy to mount the Quark onto the PST etalon but it's more difficult to reverse the 2 etalons. I've tried combining these 2 etalons but found the view too dark but I'll try again with 2x2 binning.

[marktownley]

Thanks Franco, Hiya Lou, I've never tried the PST etalon before the Quark, mine sits after it. I was using the native 4.3x telecentric on the Quark here, rather than the HaT 2.79x telecentric.

[Carbon60]

A fabulous set of images, Mark. Glad you managed to make the most of the good weather.

Stu.

[marktownley]

Thanks Stu!

[Albuqshutterbug]

Holy Cow those are great Mark.
Very well done.

Jim

[Montana]

Wow!! the mega closeups are out of this world !!

Superb CaK too, I wish I could process mine a bit better, yours always look fab

Alexandra

[mattwastell]

Hi Mark
Thanks for this collection - you did fall into the Sun! So much to see there.

[eroel]

Mark:
Beautiful clean session with different setups.
You made the most of the weather opportunity.
Regards,
Eric.

[MapleRidge]

An excellent session with superb results Mark...well done

Brian