Search found 411 matches

by PDB
Sat Oct 13, 2018 7:01 am
Forum: Solar Astronomy Shop and Swap
Topic: "Astronomie Solaire" - New (French) book on Solar Observation now available
Replies: 16
Views: 316

Re: "Astronomie Solaire" - New (French) book on Solar Observation now available

Looks very good.
@Bart: maybe we should ask for a Dutch translation. ;)

@Christian: je voudrais bien commander, mais la seul methode de payement semble “PayPal”, que je ne veux pas utiliser … Dommage

Regards,

Paul
by PDB
Sat Sep 08, 2018 4:00 pm
Forum: This is SolarChat !!
Topic: 8th September, sunpot on a spotless day
Replies: 10
Views: 624

Re: 8th September, sunpot on a spotless day

Good catch Robert. The group has now numer AR12721

Cloudy here ...

Paul
by PDB
Sat Sep 01, 2018 9:37 pm
Forum: This is SolarChat !!
Topic: One year and 55 AR's ago
Replies: 11
Views: 299

Re: One year and 300 sunspots ago

I guess I had an extra beer before posting.
Maybe not, when counting the individual spots in the AR, count goes up fast.
Anywhay, hope the beer was as good as the image.

P.
by PDB
Sat Sep 01, 2018 4:49 pm
Forum: This is SolarChat !!
Topic: One year and 55 AR's ago
Replies: 11
Views: 299

Re: One year and 300 sunspots ago

Hi Franco,

55 AR's away, but don't look back, future will bring new ones ;)

P
by PDB
Fri Aug 31, 2018 11:59 am
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 791

Re: New camera but which one?

Hmmm, very strange that a recent laptop would not have USB3 connections. On laptops USB3 ports are not always blue. They might have a superspeed label next to them, which is also USB3.
SuperSpeed.JPG
SuperSpeed.JPG (10.48 KiB) Viewed 173 times
Paul
by PDB
Fri Aug 31, 2018 10:26 am
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 791

Re: New camera but which one?

Bart is right. Does not make sense to cripple an expensive camera with slow USB connection.
Good results with a 80mmf/6, Quark and ASI120 are possible if the Sun cooperates. Just have a look (one of the first I took with that equipment).
1004-8.jpg
1004-8.jpg (62.68 KiB) Viewed 178 times
Paul
by PDB
Thu Aug 30, 2018 7:45 pm
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 791

Re: New camera but which one?

Done the calculation once how far the sensor diagonal could be tilted before moving out of the critical focus zone, but will have to redo it. (Lost in my never ending pile of rubbish). Even when using a focal reducer behind the Quark, bringing it back to f/12, still needs a considerable amount of ti...
by PDB
Thu Aug 30, 2018 7:08 pm
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 791

Re: New camera but which one?

Yes the ASI120 is famous for Newton Rings, but a tilt adapter will do. You probably will need a lot of tilt. (At least I do have with mine, still surprised the complete field of view is still sharp)

Rgrds,

Paul
by PDB
Tue Aug 28, 2018 6:51 pm
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 791

Re: New camera but which one?

Don't forget the Quark has a 4.3 telecentric built in already. If you have a Continuum or other white light solar filter, use that on the Explore Scientific scope. No barlows, no Quarks. You should have nothing but the telescope and the camera. Be CAREFULL and make sure you have a decent whitelight ...
by PDB
Mon Aug 27, 2018 6:19 am
Forum: This is SolarChat !!
Topic: Eliminating bad frames during stacking?
Replies: 9
Views: 295

Re: Eliminating bad frames during stacking?

The only problem is that when I clicked through the frames, they went two at a time, so I had to mark all the even-numbered bad frames, then go back and mark all the odd-numbered bad frames. Is there any trick that lets you step through the images one at a time? Bruce, if you click on the frame sli...
by PDB
Sat Aug 25, 2018 8:01 pm
Forum: This is SolarChat !!
Topic: Eliminating bad frames during stacking?
Replies: 9
Views: 295

Re: Eliminating bad frames during stacking?

Hi Bruce,

did you try the "Global" parameter in Quality estimation. Might be wrong but thought that could help in siturations like that. (Or passing clouds)

Regards,

Paul
by PDB
Sat Aug 18, 2018 5:16 pm
Forum: This is SolarChat !!
Topic: August 16 2018 AR12718 3 bands 280mm scope.
Replies: 21
Views: 640

Re: August 16 2018 AR12718 3 bands 280mm scope.

Valery,

you are usually producing quality images, but these are exceptional. Seeing was ok maybe is an understatement?
The glow in the CAK is great, granulation: can it be done better and that 0.2A H-Alfa, where did you find that filter ...

Regards,

Paul
by PDB
Sat Aug 18, 2018 5:12 pm
Forum: This is SolarChat !!
Topic: AR2718 Sodium and Ha
Replies: 18
Views: 567

Re: AR2718 Sodium and Ha

Have you tried to compare results with both configurations ? Used both combinations (with 2" diagonal in front of the quark) - I find straight thru more stable with the heavy Quark in the diagonal. (always gives me a scary feeling when moving scope back to home position) - seems to give less reflec...
by PDB
Sat Aug 18, 2018 8:10 am
Forum: This is SolarChat !!
Topic: AR2718 Sodium and Ha
Replies: 18
Views: 567

Re: AR2718 Sodium and Ha

Hi Franco, nice images, setups and birds. Any reason why you have the diagonal in the airylab setup? (visual?) For a camera setup I would use a straight thru connection. Do you have possibilities to make white light images of the same scale as with the sodium filter. It would be nice to compare imag...
by PDB
Sun Aug 12, 2018 9:18 pm
Forum: This is SolarChat !!
Topic: Ha Quantum filter PE 0.4Å
Replies: 33
Views: 937

Re: Ha Quantum filter PE 0.4Å

for what it's worth this is what Daystar says on their website: http://www.daystarfilters.com/inout_art ... -ERF-Glass
by PDB
Sun Aug 12, 2018 6:23 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: What camera do you use?
Replies: 13
Views: 594

Re: What camera do you use?

Rainer,

for contrast: firecapture has PreProcessing filter to make contrast changes.
Gamma now seems to work again (maybe ZWO introduced it back?
Brightness can be found in "More" menu.

Paul
by PDB
Sun Aug 12, 2018 6:22 pm
Forum: This is SolarChat !!
Topic: Ha Quantum filter PE 0.4Å
Replies: 33
Views: 937

Re: Ha Quantum filter PE 0.4Å

Will keep trying and after 2 weeks I will throw it against the wall
don't throw it against the wall. Throw it far enough so it lands on my desk :D

P
by PDB
Sun Aug 12, 2018 3:36 pm
Forum: This is SolarChat !!
Topic: Sunset Moonset on Walters Mountain + Venting Satellite
Replies: 13
Views: 419

Re: Sunset Moonset on Walters Mountain + Venting Satellite

That is a great collages Derek.
Interesting stuff (especially the last one)

P.
by PDB
Sun Aug 12, 2018 6:47 am
Forum: This is SolarChat !!
Topic: Ha Quantum filter PE 0.4Å
Replies: 33
Views: 937

Re: Ha Quantum filter PE 0.4Å

Hi Rainer, Some comments on the settings: - gamma 50 is ok. For ZWO that means neutral on no gamma correction applied. That is what I prefer. - Exposure time is almost 18 ms. That seems very long. Is the quantum giving such dark images? - Gain setting looks ok to me although not familiar with the AS...
by PDB
Sat Aug 11, 2018 8:47 pm
Forum: This is SolarChat !!
Topic: Ha Quantum filter PE 0.4Å
Replies: 33
Views: 937

Re: Ha Quantum filter PE 0.4Å

Rainer, can you post the firecapture recording log ( capturename .txt) file with the capture settings? And which version of FC are you using? Think you should use minimum v2.6 x64 (after installing first the latest ZWO camera drivers (V3.0.0.4) Check on https://astronomy-imaging-camera.com/software-...
by PDB
Sat Aug 11, 2018 8:37 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: What camera do you use?
Replies: 13
Views: 594

Re: What camera do you use?

Stefan, cameras I use are the ASI120MM-S and the ASI178MM ASI120MM-S: fairly good cam but small sensor size, and gives a lot or NR's. Needs a lot of tilt to get rid of these. Advantage: it is the only ZWO camera I know where high-speed mode does not influence quality. (Has only a 12 bit ADC used in ...
by PDB
Wed Aug 08, 2018 5:27 pm
Forum: This is SolarChat !!
Topic: Solar transit composite photo tutorial?
Replies: 9
Views: 328

Re: Solar transit composite photo tutorial?

Just one remark I would like to add. If you capture to SER files instead of AVI you can also extract the images with SerPLayer. Very easy, play the video in SER player until you see the "action". Pause, go back to the first frame with the ISS, write down the frame nummer. Go forward and mark the las...
by PDB
Wed Aug 08, 2018 5:17 pm
Forum: This is SolarChat !!
Topic: ISS Transit August 7
Replies: 9
Views: 240

Re: ISS Transit August 7

Thanks Alexandra, Jim and Robert. Was it the clouds that caused your hiccup or just an anomaly? Not the clouds. I had set the camera to high-speed mode to allow faster capture rates. That seemed to be a mistake. The ASI-178 has 3096*2080 pixels, so that puts a lot of stress on the USB 3 and cpu. I h...
by PDB
Wed Aug 08, 2018 7:10 am
Forum: This is SolarChat !!
Topic: ISS Transit August 7
Replies: 9
Views: 240

Re: ISS Transit August 7

Thanks, well you need some things (and luck) coming together. - A transit needs to happen - Needs to be a good one, with ISS close to earth - Weather - Preparation Preparation could have been better. As you can see from the detail (100% crop) at full resolution, there is still room for improvement D...
by PDB
Tue Aug 07, 2018 6:12 pm
Forum: This is SolarChat !!
Topic: ISS Transit August 7
Replies: 9
Views: 240

ISS Transit August 7

Not much to see on the Sun, but an ISS transit late afternoon. Whole day Sunshine, then clouds started to form and 1 minute before the transit the Sun was still obscured by a thick cloud. Then suddenly it cleared, 1 second transit and a few seconds later another cloud dimmed the image. Because of al...