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Svbony SV305

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#51 Seany75uk

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Posted 22 January 2021 - 08:00 AM

If you cant focus you may need to add an extension to your focuser. When i used it on my main imaging train it was before i modified my focuser and primary closer for dslr. Just slowy pull out your Sv305 from the focuser and see if you achieve focus.


Thanks I'll give it a go👍🏻
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#52 MattZ40

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Posted 23 January 2021 - 02:01 PM

The next FireCapture beta build (v2.7.03) will include native support for the SV305 so maybe you can try again when it's available in a about 2-3 weeks.

Torsten
 

That's great news, thanks Thorsten.



#53 Fitz8710

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Posted 29 January 2021 - 08:40 AM

Got an off axis guider on the way for my 8 inch newtonian. I will post results in the coming weeks to see how well the sv305 works on an OAG.
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#54 crazysaint

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Posted 03 February 2021 - 10:54 PM

This is my latest best with the SV106/SV305 combo. Best 60 subs out of 107 12s exposures using 4 gain. Remember, this is on a cheap manual EQ with just a single-axis motor drive keeping it steady and Bortle 8/9 skies.

M42

Edited by crazysaint, 03 February 2021 - 10:55 PM.

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#55 Fitz8710

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Posted 03 February 2021 - 11:33 PM

Looks good, is that an achromat refractor?

#56 Borodog

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Posted 04 February 2021 - 03:57 PM

This is my latest best with the SV106/SV305 combo. Best 60 subs out of 107 12s exposures using 4 gain. Remember, this is on a cheap manual EQ with just a single-axis motor drive keeping it steady and Bortle 8/9 skies.

Same target, same combo, B5 sky. I believe this was gain 1, 8s subs, total of 224s.

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Edited by Borodog, 04 February 2021 - 03:59 PM.

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#57 crazysaint

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Posted 04 February 2021 - 07:06 PM

Looks good, is that an achromat refractor?

Yes, it's the SVBONY SV106 60mm guide/finder scope that I'm using as part of my ultra-budget AP rig.


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#58 crazysaint

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Posted 04 February 2021 - 07:11 PM

Same target, same combo, B5 sky. I believe this was gain 1, 8s subs, total of 224s.

Looks great!



#59 Fitz8710

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Posted 04 February 2021 - 08:30 PM

Goodbye flexure, hello...uhh  every other problem.. haha. Got the Sv305 setup for OAG.  If the blizzard ever goes away ill test it and let everyone know how well it does.

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#60 Fitz8710

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Posted 07 February 2021 - 12:31 PM

If anyone has any questions about getting the sv305 into focus with your primary on a newtonian let me know.   Wow was that a PITA.   

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#61 Borodog

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Posted 07 February 2021 - 03:03 PM

6 hour time lapse of the stars with the SV305 & a 6mm C-mount lens. I wish you could see the uncompressed footage.

 

https://youtu.be/l_qZrk_Gk6M


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#62 Fitz8710

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Posted 07 February 2021 - 04:27 PM

That is beautiful. Keep showing us this cameras capabilities! Good job.
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#63 Fitz8710

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Posted 08 February 2021 - 10:36 PM

Had a stall in my oag testing.  I have a CEM70 finding its way to my door tommorrow.  Will test OAG once that is figured out   whee.gif



#64 Borodog

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Posted 09 February 2021 - 10:59 PM

More SV305 deep sky. The main problem that I have with the camera for this purpose is not really the small sensor, I'm fine with that for now. It's that, as an uncooled camera, the temperature seems to keep changing for a loooong time, so my darks eventually go bad. This image looked fine live stacked in SharpCap for EAA, but when I stretched the raw stack it was full of CMY (cyan, magneta, yellow) splotches where the darks were over-correcting because the temperature had fallen, which I fixed in post in the laziest possible way. So apparently you have to keep shooting darks frequently, which is a PITA. Can't wait for the SV405c.

 

 

 

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#65 Fitz8710

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Posted 09 February 2021 - 11:13 PM

I can see the horse head though. Not bad for the little 305 :)
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#66 crazysaint

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Posted 10 February 2021 - 11:24 PM

More SV305 deep sky. The main problem that I have with the camera for this purpose is not really the small sensor, I'm fine with that for now. It's that, as an uncooled camera, the temperature seems to keep changing for a loooong time, so my darks eventually go bad. This image looked fine live stacked in SharpCap for EAA, but when I stretched the raw stack it was full of CMY (cyan, magneta, yellow) splotches where the darks were over-correcting because the temperature had fallen, which I fixed in post in the laziest possible way. So apparently you have to keep shooting darks frequently, which is a PITA. Can't wait for the SV405c.

It's still a very nice pic. Was that taken with the SV106 or a bigger scope?


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#67 Borodog

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Posted 10 February 2021 - 11:27 PM

It's still a very nice pic. Was that taken with the SV106 or a bigger scope?

The SV106. Was riding on my C8 but only for tracking.



#68 crazysaint

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Posted 11 February 2021 - 10:43 PM

The SV106. Was riding on my C8 but only for tracking.

Wow, what sort of skies are you under again? I haven't been able to make anything of the Flame or Horsehead nebulas with the SV106 under my Bortle 8/9 skies.


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#69 Borodog

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Posted 11 February 2021 - 11:22 PM

B5. This spring I hope to get out to a B2 area.

 

In other news, perhaps those following this thread might find this interesting. I had ordered and finally received (today) an SV205. This is an older technology camera and has become pretty much obsolete. Hence they can be had for pretty cheap; I paid $90 shipped. I got it specifically to see how it will perform for lunar photography. It has a similar (small) sensor size to the 305, but is 8 Mpxl vs. 2.1 for the 305. It will only do 15 fps at full frame, but that's adequate for lunar. You just have to shoot longer. Anyway, it has teeny tiny 1.4 micron pixels, which I think will make imaging much easier given my focal lengths. Once I have a chance to try it out I'll post an update. 


Edited by Borodog, 12 February 2021 - 05:39 PM.

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#70 Borodog

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Posted 14 February 2021 - 02:50 PM

Cautiously optimistic about the SV205 for lunar. Tested it today and the image quality seems good. Was only getting 13.5 fps (old laptop with no USB 3) but that should be ok for lunar. Won't really know until I have a clear sky with a Moon to test.

 

One possible concern is that there are only two selections available for color space, mjpg and YUY2. The former I know is compressed, but I'm not sure if the latter is as well. I don't know a lot about video color spaces and I've found conflicting information about whether YUY2 is a compressed version of YUV or just is a version of YUV that compresses better. If it's compressed, that would be bad, although stacking would (hopefully) mitigate any compression artifacts.


Edited by Borodog, 14 February 2021 - 05:33 PM.

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#71 Fitz8710

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Posted 21 February 2021 - 09:24 PM

I have been testing the SV305 as a guide camera through PHD2. First i was guiding thrpugh a 50mm guide scope but was having flexure and mount issues. So i moved on to off axis guiding. Off axis was an immediate improvement but i wanted to wait until i got my new mount to fully test it as a guide camera. So the picture shows what i got for most of the night. Im not going to say that it is as sensitive as a zwo290mm because it is not monochrome. At the same time i have had no issues finding stars or guiding with it being a color sensor. It is the same chip sony imx290. The sv305 can be had on classifieds sometimes for about 100 dollars so its a fraction the cost of an Asi290. If anyone has questions about my driver or phd2 setup for the sv305 let me know.

Thank you,

Clear skies.

I know the snr is low on that star but the seeing absolutely horrible when i took that picture and the target was lacking good stars. Usually i see 40 to 60 snr stars with 1 to 2.5 second exposures.

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  • 20210216_223422_compress97.jpg

Edited by Fitz8710, 21 February 2021 - 09:28 PM.


#72 teashea

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Posted 22 February 2021 - 01:16 PM

Welcome to cloudy nights.  Sv305 would work for both planetary and guiding fine.  It wont be as sensitive as a monochrome camera but its still a Sony imx290 sensor.  Ive taken pretty decent planetary pictures with it with no tracking and that was before i learned good collimation and focus.  The price is right for the little guy too.  Only thing i dont know about is the longevity of the camera ( is it built well?).  Seems to be built pretty good though.  Doesnt feel cheap.

Very impressive images.


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#73 crazysaint

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Posted 24 February 2021 - 10:21 PM

This is probably as good I'm going to get with the SV305/106 combo under my skies. Roughly 100 12s subs at 4 gain. Not too shabby, though.
M42

Edited by crazysaint, 24 February 2021 - 10:22 PM.

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#74 va1erian

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Posted 27 February 2021 - 12:20 AM

Apparently, SVBONY is now deciding whether they should release SV305 mono. There is a voting on Facebook, and only 1/3 people said they would buy it. 

 

What would the camera be good for, anyway ? As a guider camera ? What else ? What kind of astrophotographer would buy it ?



#75 Fitz8710

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Posted 27 February 2021 - 08:33 AM

A guide camera with the imx290 that isnt 300 dollars. Id buy it.
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