Search found 384 matches

by bart1805
Mon Feb 18, 2019 11:14 pm
Forum: This is SolarChat !!
Topic: CaK, 17022019
Replies: 7
Views: 108

Re: CaK, 17022019

Montana wrote:
Mon Feb 18, 2019 12:31 pm
These are super!
Alexandra
Thanks Alexandra and Maurits!
I made a new version of the one with the Baader VIP. Processing was way more aggressive. Really curious what you all think about it:

Image
by bart1805
Mon Feb 18, 2019 9:25 pm
Forum: This is SolarChat !!
Topic: anim prom Sun 13-02-2019
Replies: 20
Views: 157

Re: anim prom Sun 13-02-2019

A total of 4 hours? Briljant!
by bart1805
Mon Feb 18, 2019 9:11 pm
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

MAURITS wrote:
Mon Feb 18, 2019 4:03 pm
Very nice images Bart ...
Thanks Maurits. I looked at your website, that is a dreamscope for CaK!
by bart1805
Mon Feb 18, 2019 1:08 pm
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

Do you think the improvement in #3,4,5 is due to narrowing around 393nm, or due to better blocking of more distant wavelengths, say UV or IR? Hi George, That is the most interesting question. The amount of light in the focal point when just the Lunt filters are installed is very limited. Just a fai...
by bart1805
Mon Feb 18, 2019 6:51 am
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

Hi George, The piece I am using now is the two inch extension, first one on the left in these pictures: https://solarchatforum.com/viewtopic.php?f=9&t=25552 It contains two blocking filters that are slightly tilted. The 6 mm filter is the second one from the right on the first picture. If you use th...
by bart1805
Sun Feb 17, 2019 8:48 pm
Forum: This is SolarChat !!
Topic: Feb 14, 15 more testing
Replies: 10
Views: 113

Re: Feb 14, 15 more testing

You did a very good job hiding these problems! Here is what I will be trying in a couple of weeks when doublestacking:
viewtopic.php?f=9&t=25524
by bart1805
Sun Feb 17, 2019 7:48 pm
Forum: This is SolarChat !!
Topic: CaK, 17022019
Replies: 7
Views: 108

Re: CaK, 17022019

Thanks guys! There was something else interesting when imaging today. One of the PST #1 filters is mounted on the nosepiece of a Skybender. The other one is mounted inside. I never tried what happened when you tilt the second one more. I could see the histogram move to the right and get a bit wider ...
by bart1805
Sun Feb 17, 2019 7:48 pm
Forum: This is SolarChat !!
Topic: Feb 14, 15 more testing
Replies: 10
Views: 113

Re: Feb 14, 15 more testing

These look great! And you don't seem to be bothered by reflections and banding. So Solar Spectrum plus PST etalon is an interesting road!
by bart1805
Sun Feb 17, 2019 5:00 pm
Forum: This is SolarChat !!
Topic: CaK, 17022019
Replies: 7
Views: 108

CaK, 17022019

Today another try at CaK. Seeing was way better than yesterday, transparency was not good. 100mm ED f/9 _ Lunt Blocking filters _ 1 Baader K Line filter _ Tw PST #1 filters _ ASI290MM @900mm https://astrob.in/391387/0/rawthumb/gallery/get.jpg?insecure And @ about f/16 with a Baader VIP. Next time wi...
by bart1805
Sun Feb 17, 2019 4:54 pm
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

Thanks Paul and Raf!
by bart1805
Sun Feb 17, 2019 4:53 pm
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

Thanks for the trials you gone through Bart! Could you post or PM me the image trials of the filter combinations? Just curious to see all the results for the comparison... Hi Bob, Here they are. 1. Baader Blue / KG3 / Baader K-line separated in two filter cells https://farm8.staticflickr.com/7816/4...
by bart1805
Sun Feb 17, 2019 9:12 am
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

Re: CaK, 16022019. SolarMonitor plus experiments

Thanks Marty! A bigger stacksize is not the most important thing, look at Christian's images and his stacksize. It is all about focus, noise and a good seeing.
by bart1805
Sat Feb 16, 2019 10:20 pm
Forum: This is SolarChat !!
Topic: CaK, 16022019. SolarMonitor plus experiments
Replies: 17
Views: 212

CaK, 16022019. SolarMonitor plus experiments

Today the weather was nice! And for a couple of hours I was able to experiment some more with the CaK filter. Plus it was the first time I used the SSM from Airylab with the SolarMonitor software Paul made. It worked fantastic, so thanks again Paul! The advantages: - you go from lucky imaging to mor...
by bart1805
Thu Feb 14, 2019 7:20 am
Forum: This is SolarChat !!
Topic: Proms Feb 6,7,12 + Question
Replies: 6
Views: 72

Re: Proms Feb 6,7,12 + Question

Hi Phil,
I am a member of the "soft school". So, like Mark, would choose number 3. Beautiful pictures btw. CS, Bart.
by bart1805
Wed Feb 13, 2019 9:49 pm
Forum: This is SolarChat !!
Topic: The effect of a circular polarizer in a double stack
Replies: 17
Views: 478

Re: The effect of a circular polarizer in a double stack

I tried both ways. And was convinced that facing backwards worked best. But I did not make any adjustments, so the position of the CP was fixed. Facing backwards, the average lightloss is less than facing forward. Could that be the reason? So not so much the amount of reflections, but the amount of ...
by bart1805
Mon Feb 11, 2019 9:13 pm
Forum: This is SolarChat !!
Topic: 1.25" Filter Tilt Adapter. Who is interested?
Replies: 4
Views: 93

Re: 1.25" Filter Tilt Adapter. Who is interested?

christian viladrich wrote:
Mon Feb 11, 2019 8:25 pm
It is custom made starting from Baader 42 mm thread tube.
Thanks again!
by bart1805
Mon Feb 11, 2019 8:14 pm
Forum: This is SolarChat !!
Topic: 1.25" Filter Tilt Adapter. Who is interested?
Replies: 4
Views: 93

Re: 1.25" Filter Tilt Adapter. Who is interested?

Hi Bart, I have two of these tilt adapters (from Beloptik). I used them for testing Omega Ha filters. They work fine. The tilt is rather easy to adjust. They stay tuned (there are two screws which can be tightened more or less). Christian Hi Christian, Thanks! Are that two Baader units or custom ma...
by bart1805
Mon Feb 11, 2019 9:56 am
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 27
Views: 1218

Re: Old Coronado BF30

pedro wrote:
Sun Feb 10, 2019 12:34 pm
Great news, Have you tried it yet?
No, unfortunately not. It is on the long list of things to try, hope to do so in the next couple of weeks.
by bart1805
Sun Feb 10, 2019 9:53 pm
Forum: This is SolarChat !!
Topic: Feb 10th - A Bit of an experiment!
Replies: 7
Views: 103

Re: Feb 10th - A Bit of an experiment!

Hi David,
Don't have any experience wit this scope. But with a Bresser 127mm f/9,4. Quite good in H-alpha. Not so good in CaK.
If I ever fall upon a cheap ASI178, I would use it with the lens of a PST CaK. And use the Baader VIP to go from f/10 tot f/12,5.
CS! Bart.
by bart1805
Sun Feb 10, 2019 9:03 pm
Forum: This is SolarChat !!
Topic: 1.25" Filter Tilt Adapter. Who is interested?
Replies: 4
Views: 93

1.25" Filter Tilt Adapter. Who is interested?

Good evening everyone! In another thread Bob Yoesle mentioned a filter tilt adapter he saw: http://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGT2125TILT He asked if anybody knew what it was exactly. At that time I was emailing with Gerd Neumann ...
by bart1805
Sat Feb 09, 2019 10:11 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 27
Views: 1218

Re: Old Coronado BF30

Problem solved. It is M50x0,75. And an Australian nosepiece (Ken!) fits perfect!
by bart1805
Sat Feb 09, 2019 10:10 pm
Forum: This is SolarChat !!
Topic: The effect of a circular polarizer in a double stack
Replies: 17
Views: 478

Re: The effect of a circular polarizer in a double stack

Merlin66 wrote:
Sat Feb 09, 2019 3:23 am
Here we go..
Thanks Ken!
by bart1805
Thu Feb 07, 2019 10:10 pm
Forum: This is SolarChat !!
Topic: Lunar New Year Sun from Singapore (6 Feb 19) - New Image added
Replies: 10
Views: 213

Re: Lunar New Year Sun from Singapore (6 Feb 19)

Like Franco wrote: nice and sharp!
What do you mean by "compensated for CAK wavelength" for the 60mm? Don't see your Lunt diagonal on the picture of the 60mm set up, did you use CaK filter? CS! Bart.
by bart1805
Wed Feb 06, 2019 4:22 pm
Forum: Solar Scope Modifications
Topic: Lunt CaK diagonal modded to straight through
Replies: 7
Views: 294

Re: Lunt CaK diagonal modded to straight through

Gerd Neumann confirmed it is indeed an old Baader part.
by bart1805
Tue Feb 05, 2019 7:16 am
Forum: This is SolarChat !!
Topic: CaK, 03022019
Replies: 17
Views: 338

Re: CaK, 03022019

Nicely done, Bart ! Is that the spicules layer ? If that is what it is, I do not believe I saw it before in CaK... Franco Thanks Franco. Yes, that is the "double limb". But it has been done before: Mark and Bob for example have taken much better images of it. Most of the the time CaK images are pro...