SolarChat!

fjabet

Can't tell you for the ZWO, but the Basler achieved 2200 fps at this size (with internal 12 bits processing, not 10 bits).

fjabet

Phase correlation guiding is present Valery

fjabet

We usually have plenty of light in solar imaging. With the HaT and the PST Etalon my exposure is about 3ms at F/D 27.5. That gives room for higher throuput.
In white light it is sub ms.
The IMX174 presents very good performances with full 24db gain.

fjabet

Honestly I don't know Valery.
Readout speed may impact the read out noise, but rather on a CCD sensor than with a CMOS.
The only way to know is it measure the RON in both modes, or ask PGR.

fjabet

The Basler 1920 can go at more than 1000 fps with AoI

fjabet

You should avoid rolling shutter sensor for solar imaging.

fjabet

Hello Valery !

There are two modes with PGR cameras : Mode 0 that gives the best speed, and mode 7 that gives the higher quality (and lower speed).
You have to deactivate the Mode7 in Genika options/acquisition/mode7.
The change is applied immediatly and you should see the speed increasing.

fjabet

I don't agree, in 15 years it did change a lot : - more aperture ! Some years ago most people though that 100mm was the optimal aperture due to the turbulence invincible wall. Now we use 400/500mm in white light, and 280mm in HA :) Filigrees have been shot for the first time by Christian this year, ...

fjabet

As Mike mentioned, the scintillation correlates to the ground and transition layers induced turbulence. That are roughtly the two first kilometers of the atmosphere. When looking at the Huffganel/Valley seeing model by day, there are two peaks of turbulence, one is the classical troposphere between ...

fjabet

At least Genika 2.10 is available ! It brings the GigE PGR camera (thanks a lot to Ruppert for lending me a camera ! If you need to buy a PGR camera with Genika, go see him, he is a great guy :)). And also ZWO ASI USB3 camera support with a special focus on color support. @Valery : now Genika should...

fjabet

Ruppert kindly sent me one GigE camera. I'll look at this ASAP.

fjabet

Thick parallel window in a converging beam brings spherical aberration indeed.

fjabet

@Mark : the 12mm front filter in the Quark is the BF with the bandpass, not an ERF

fjabet

A very sad news, we were exchanging on a regular basis and he was such a nice guy, always constructive and positive...

fjabet

Hello all, at last Genika Astro supports Pointgrey USB camera again. The support is for USB 2/3 monochrome camera starting on this release 2.9.4, GigE will hopefully follow soon. As a bonus, I also added a phase correlation autoguiding (in addition to the center of gravity) to autoguide on surface f...

fjabet

Good sensor, but very difficult to use due to high PRNUs.
I switched to the Basler 1920-155 with the IMX174 and it is much easier to use for very good results.
IMX174 has a very good dynamic range in the Basler (over 12,1 bits measured), I'm surprised the ZWO doesn't show that dynamic ?

fjabet

It's a funny little thing (that may show very disappointing readings also...). I did test several SSM in parallel with the same readings, readings can be directly compared between each others. I did the test mostly to see the cable length impact. Up to 2m using unshielded audio RCA is fine. I didn't...

fjabet

Not sure Valery. I think he used his 0.4A PE Quantum, his PST is ready yet as far as I know.

fjabet

Hello, I can't resist to share this amazing image from Thierry Legault shot with is 280mm HaT. Probably the most resolved image in Ha band I've seen from an amateur !

fjabet

Great Pedro. It should work fine with your USB camera.
Mark, send me the serial of your camera to fjabet at airylab.com

fjabet

Genika is now working with USB PGR cameras in both 32 and 64 bits (Genika has the two versions). As for GigE I coded it, but I have nothing to test it and in the PGR SDK, GigE management is different from USB. And I think that doing that at a distance would require a lot of tests. Depends on the tim...

fjabet

I don't use one at home, my velum is at the right place.
When I'm on the field, I use an iCap that is very well build. It's a bit expansive, but it is worth it.

fjabet

I don't want to support FC. Genika PGR support is now coded and passing in beta test for USB. I did the GigE as well but I have no camera to test it.
And I can now confirm what my wife told me about PGR SDK : it is absolutly archaic

fjabet

1) When capturing 16 Bit at 1920x1200 (2.3MP) the PC is dealing with a lot of data. If anyone has seen more than 40FPS @ 16 bit for Solar at 1920x1200, and been able to capture at more than 500 frames before the memory collapses please let us know! USB3 power can be very poor and lead to increased ...

fjabet

Hello all, my demo HaT being all packed for it is leaving to UK by tomorrow, here is some white light views before I get the new (bigger) one. It has been done with the CN212 at F/35 and the Basler 1920-155um. The SSM has been made optimistic by the strong morning haze that is not common here. My wi...

fjabet

Hello guys, I started PGR integration, it should be running by the end of this month.
I should call for a couple of beta tester in a while

fjabet

AR2371 with a larger sampling than Jean Pierre. It may change soon with maybe a 280mm HaT :) http://www.astrochonum.com/Astro/solaire/26-Juin-2015/zone-full-invert.jpg http://www.astrochonum.com/Astro/solaire/26-Juin-2015/zone-full.jpg Seeing evolution suring the acquisition : http://astrochonum.com...

fjabet

It is done with the HaT and a PST etalon indeed. I do think that the SSM isn't quite usefull with a small diameter, and it depends on the sampling as well. When I was doing full suns with the FS60 and its SM60 doublestack, I was not sensitive to seeing. Maybe the limit from which the SSM makes sense...

fjabet

Hi all, I was lucky this morning to have the seeing monitor to trig the acquisition five times in a row at more or less 1 minute interval, and right in the beginning of a flare ! http://astrochonum.com/Astro/solaire/5-juin-2015-animation/animation1.gif And another area : http://astrochonum.com/Astro...

fjabet

I'm the author of Genika actually

I may add back PGR at some stage this year, expecting the SDK to be much better than 3 years ago...

fjabet

Hello Valery, sure you can ! In fact there are two things : - The SSM that has a screen, and it's own standalone software for display and logging - then Genika Astro for camera control, and it also can connect to the SSM Genika supports as of now AVT, Basler, IDS, The Imaging Source/Celestron, Rapto...

fjabet

We have a rather poor seeing in the south of France actually. But the SSM saved my day by finding the good window of 20s at 9h10 ! It found that (horizontal 20s span starting at 9h10.21, scale is arcsec seeing) : http://astrochonum.com/Astro/solaire/4-juin-2015/seeing.jpg in that : http://astrochonu...

fjabet

Thanks all ! @Mark : acutally the SSM has its own independant software. For the PGR point, that would require an evolution of Genika Astro. I don't know for know. We had a poor experience developping with PGR camera SDK, I may check in the second half of this year but adding a new camera is a quite ...

fjabet

Hi all !
A couple of images from yesterday. Poor seeing, but a lot of fun ! HaT 203m, PST etalon and Basler 1920-155um SSM triggered.

fjabet

Would it be possible to see pictures of the etalon part on both side ? If you don't want to make them or to unscrew the white tube from the etalon, there is no problem

fjabet

I would do it in telecentric mode after the HaT, so without the focusing lenses...

fjabet

I sell my personal Daystar Quantum 0.6 PE. The filter was bought one year ago, it is still under warranty for 9 years. Excellent homogeneity and brightness.
Shipping possible to EU.
Contact me for price, images and spectrophotometry report.

fjabet

Now the question is : how good is this 35mm etalon for mods

fjabet

I did it a couple of times on Coronado. As Merlin mentioned just clean up thoroughtly the spacers with aceton (better than Alcohol), align, and firmly recontact until you hear the snap sound of the molecular bonding. BUT if the spacers are surrounded by glass little pieces as I saw on the couple of ...

fjabet

Thx Walter !

@Alexandra : Outside EU its 225€ ex VAT for the standard edition, 270€ ex VAT for the remote edition.
Within EU its 270€ and 320€ (inc 20% VAT), and 20€ for shipping.

Frédéric.

fjabet

Hoping that I can still make an announcement here, I'm proud to announce the general availability of the first off the shelves solar seeing monitor ! http://airylab.com/contenu/SSM/Setup_SSM.jpg The Solar Scintillation Monitor (SSM) is the first daylight seeing analysis system for the amateur solar ...

fjabet

You will gain resolution only on the ERF axis, and it'd better be symmetrical.

fjabet

Your PSF will be quite weird with those aperture.
Note also that SCT are very poor in UV.

fjabet

Thanks Valtori !

@Valery : Genika is available, the 2.9 update will launch next week.
The SSM as well, I received the stickers just today, 3 weeks to get those

fjabet

Thank you, I guess. I don't see how that answers my question but it's okay. It's beyond my budget anyway. I try again, my fault :) At F/10 with its collimating lens, the PST etalon would deliver only a very small sweet HA spot (Jacquinot effect) due to the 2m FL. As this system is made for high res...

fjabet

Impressive toys! About using the PST etalon, is there a need for the telecentric device as the PST is originally layed out for a f/10 system? The field is homogeneous when used in telecentric mode. This is for HR, not to see the whole sun :) The FoV is about 1/8th of the sun, that's quite enough to...

fjabet

marktownley wrote:What a fine scope and setup!

Is there any reason you have the blocker, and then the UV/IR KG3, rather than putting them the other way around as putting the KG3 first would reduce the thermal load on the BF15.

Yes : the KG3 is an absoption filter ! And the BF just reflect almost everything.

fjabet

Nice shots Valery !

fjabet

Hello Walter, I have a slight drift as the AP controler doesn't have a solar speed on the Dec axis. You give Genika a threshold, and it starts acquiring when the seeing goes below. QUite simple. Hi Frédéric a wonderful shot. How long does your set up track a spot on the sun ? Does the SSM trigger th...

fjabet

Thank you Alexandra !!

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