Hi!
Thank you for the feedback.
The spicules look to me like a bush with a few trees.
I still wondering their shape.
CS
Alex

Hi! One more period with no sunspot... Just a few filaments and protuberances: http://www.presencenet.be/nucleus2.0/media/13/20180709-20180708_S01_12_08-34-13_S035_..._Col.jpg and some surface strange features: http://www.presencenet.be/nucleus2.0/media/13/20180709-20180708_S03_13_10-30-34_S050_..._...

Your details are very fine.
Can you give a try on the protuberances?
There is probably more to see there.
CS
Alex

Hi! I'm happy to see that the protuberances are still active. Why didn't you straight continue imaging the sun in the morning? The seeing is expected to be better on the morning. At my last session, I really detected poor imaging conditions at 07:00 to 08:00, when the sun was too low, better from 08...

From an other forum, I get that the coating was not the same on the different version of the TZ4
CS
Alex

Thank you Alexandra. TheSkyBurner, posting an unprocessed animation is quite heavy, but here is one frame. Some comments from my side. I'm testing various “barlow” combinations. Here, with a telecentric x5, thus the resulting data are F 8750mm, and F/D 35. These values are much too high for my local...

Hi! The camera is a ZWO ASI174MM The CaK partially moded -> first 2 filters removed, replaced by a KLine. There is a prefilter. The scope is a Newton D250mm I have made several tests with the same setup, just changing the amplification with different “barlows”: powermate x2, x2.4, x4, TZ4 and custom...

Hi, While using a Baader TZ4 for CaK imaging, I noticed that the sensor exposure time was ~5x longer than it should normally be. Is the coating characteristics of these baader TZ2/TZ4 known? I guess that the TZ3 is designed for the new Triband-SCT, thus leaving the blue spectrum passing through. May...

Hi!
Everything is in the subject: CaK pictures taken on June 26th with a 250mm newton combined with a TZ5.
CS
Alex.

Eric, I'm passing trough the posts.
I wonder the CaK proms on your pics.
Congrats!
CS
Alex

This image is sooooo fantastic.
But the video express so much the dynamics. Fan-tas-tic!
CS
Alex

Very fine pics Eric; my preference go for the CaK.
CS
Alex

Very fine pics!
CS
Alex

Thanks.
According to the local turbulence, I'm not sure that I could get better results.
I should find a site with better conditions.

CS
Alex.

Very contrasted 3D looking high res. pic.!
CS
Alex

I like it.
CS
Alex

Hi! Second trial of a TZ5. This time, the capture was made earlier on the morning in the hope for better turbulence. The picture is shown at full resolution. http://www.presencenet.be/nucleus2.0/media/13/20180527-20180520_02_S01_12..._j080.jpg CS Alex 2018May20 Solar Netwon T250 Telecentric X5 ASI 1...

I wish you would have used a barlow to capture the prom. It looks to be liked to an eruptive event.
CS
Alex

Fine pics!
CS
Alex

Nice shots.
Personally, I like the active spots and high resolutions.
So my preference are the first and last images.
CS
Alex

Great shot in CaK.
I look forward for your next posts with the new corrective lens.
CS
Alex.

Very crispy pics.
Thanks Eric.
CS
Alex

Thank Pedro.

We don't need to go to spaceweather to figure the sun activity. You have a wonderful survey!

CS
Alex

The view through the front assembly shows a purple cast, in accordance with the curve of these filters, posted on this forum
The picture is "quickly" taken with a smart phone.

2018May26 - Additional notes

I couldn't remove the adapter holding the 3rd filter.
Indeed, the parts connected to the diagonal look to be glued.



CS
Alex