whipdry

Hi John, 

ITM have angled USB2.0 & USB3.0 cables with different A/B angled connections, the shortest I could see is 1m lengths. 

https://itm-components.co.uk/pages/search-results-page?page=3&q=usb+right-angle

Peter 

Hi Thommy, 

Did you try changing any of the Ascom properties in the SX Camera Setup? 

If not maybe Enable Advanced USB Parameters might help, there's also an  Enable Debugging Option...  not that I'd understand anything you'd get in the dump files though! 

Peter 

Hi Thommy, 

I've used Bret's ascom driver with mono & colour SXVh9/c and both work in SGPro & AstroArt... perhaps just check it works in one of these programs first as it'll narrow it down to being a NINA specific issue. 

Peter 

44 minutes ago, tooth_dr said:

I’ve since had an email from Hitec Astro, offing to do a firmware update. I’m going to send my MHP over to England for this, should bring the step size down to 4um

Ok that seems like the best way forward. 

I have a Focus Master it always worked best with 1/2 steps set.

Maybe ask them about the step size setting perhaps it could be as low as 0.5 as I'm guessing that would also be 1/2 steps. 

Hello Adam, 

Are you using the latest MHP driver version: 1.56?

Not sure if the focuser settings within the MHP software have an influence but perhaps a screenshot showing yours would help? 

Maybe someone might spot an issue!

Peter 

Here's a link showing the cable wiring for the earlier Etx, one end plugs into the Autostar controller & the other into a serial to USB cable;

http://www.weasner.com/etx/autostar/as_cable505.html

Peter 

8 minutes ago, vlaiv said:

Ok, here it is:

F/10 scope is for example 6" (or rather 150mm to be precise) F/10 scope and F/5 scope is 4" (again 100mm) F/5 scope.

F/10 scope has 1500mm focal length and F/5 scope has 500mm focal length.

We put sensor A on F/10 scope and put sensor B on F/5 scope.

Sensor A is 3 times larger than sensor B and has x3 pixel size of sensor B.

Due to fact that F/10 has x3 focal length of F/5 scope and sensor A is three times larger (x3 height and x3 width) than B - both F/10+A and F/5+B will provide exact same FOV.

Due to fact that A has x3 larger pixels than B and F/10 has x3 longer FL than F/5 - again F/10+A and F/5+B will have same sampling rate / resolution in arc seconds per pixel.

So both FOV and resolution of these two setups are the same.

However light gathering surface of F/10 scope is 75^2*PI centimeters squared vs 50^2*pi centimeters squared of F/5 scope or calculated this turns out to be ~17671.5 : ~7854 = x2.25

F/10 scope will gather 2.25 more photons in same amount of time as will F/5 and those photons will be spread over same FOV and sampled by same number of pixels. Measured signal will be therefore larger by factor of x2.25 and resulting SNR will be at most larger by factor of x1.5 (at most because SNR does not depend only on signal level and shot noise, but other noise sources as well).

Here we have shown that F/10 scope when paired with carefully chosen camera and pixel size will be faster than F/5 scope with certain camera and pixel size. We have shown another important thing - speed of astrophotograpy setup depends on other factors than size of objective and focal length and thus those two alone can't be used to determine speed of of setup.

Now that's sorted who believes in santa-claus? 

Peter 

Think it's already mentioned it's a manual filter wheel... I'd agree having a few pictures of the setup has to be the way forward! 

Peter 

Just looked working for me! 

Peter 

I use the Atik Ascom drivers with SGPro on a Windows 10 NUC, my camera is a One9.0.

Once I have everything  powered up & Windows has loaded I just do a restart before running SGPro & connecting the camera... maybe worth trying as it works me! 

Peter 

58 minutes ago, Davey-T said:

Wonder if the latest QSI ASCOM drivers will do the same ?

Dave

Hello Dave, 

I don't know anything about QSI drivers, perhaps you could give them a call... I guess Vince would know. 

Peter 

Got a heads up from Vince at Atik cameras this week... Atik Ascom drivers will soon be updated and be able to connect four devices.

This doubles what could be connected with the existing drivers when using a single computer for multiple camera control. 

Peter 

I think you'll find your eyes/brain adjusts to colour variations quite quickly comparable to the white balance of a digital camera.

It's easy to see in daylight, turn on a warm white light bulb and stare at it with one eye closed or covered for 30sec then look away towards a plain coloured wall while blinking from one eye to the other... over a short time both eyes will return to seeing the same tones. 

Peter 

Unknown to me... great image, thanks for sharing. 

Peter 

Nicely done, well worth all the effort. 

Peter

Thanks Gina,

I'm happy with the colour but not so keen on the stars, guess I need to learn some star masking techniques. 

Peter

Just now, don4l said:

If that thread goes the whole way through, then I would only need one of them!

It's a pity that you cannot phone FLO. 

OK l have the sx filter wheel with this type of adapter the thread is 6mm in length on mine, guess just the one would work! 

Peter 

How about bolting 2 of female M54 versions together;

https://www.firstlightoptics.com/starlight-xpress-accessories/adapters-for-starlight-xpress-usb-filter-wheel.html

Peter 

12 minutes ago, Star101 said:

Very nice. whipdry

I have been imaging this myself the last few nights. Not had chance to process yet. If mine looks half as good as this, I will be happy

I see your also in the UK hopefully won't take you 3 years! 

Peter 

2 hours ago, knobby said:

That's really nice !

Thanks

2 hours ago, don4l said:

Very nice.  I really like the way that the colours have come out.

2 hours ago, DaveS said:

Yes, very good choice of palette.

I think the colour rendering was helped by combining the stacked SHO for the L channel, strong signal in the SII & OIII being the key in stopping the Ha from being the prominent factor.

Peter

The image data used was collected over 10 nights that spanned a 3 year period.

Using Astrodon filter;
SII 5 nm        36 x 900sec.    18 & 19th Dec. 2017 & 25th Feb. 2018
Ha 5 nm       21 x 900sec.    1st,6 & 7th Sep. 2017
OIII 3 nm      27 x 900sec.    16th Dec. 2017, 7th Jan. 2018 & 27th Oct. 2019

Equipment;
Atik One 9.0 & FSQ-85 with QE 0.73 reducer mounted on a Mesu 200.

Software used:
SG pro, AstroArt5 & Photoshop CS2.

Over recent years I've enjoyed viewing many of the deepsky images posted here, although I don't post that often here's my most recently finished attempt.

Peter

2 minutes ago, assouptro said:

Hi Peter

Thanks for taking the time to respond to my question.

It's definitely an idea!

I was hoping someone could tell me a way of identifying the rotated subs via software or some kind of file marker but if that's not possible then your suggestion is probably the next best option and a good one at that!

Cheers 

Bryan

Just tried it on my One9.0 subs zoomed in on the hottest pixel on the dark and blinked a Ha sub and it's shows the hot pixel in the same place... funny I never thought to do this when I had the same issue so thanks for the question. 

Peter

Only thing I can suggest is do a 20 min dark frame adjust the histogram so just the hottest pixels are viable then blink with the light frames and see if you get a match... not tried this myself. 

Peter

38 minutes ago, kirkster501 said:

It depends on what you are doing.  Usually with astronomy devices only two items of the same type are supported on the same PC.  I have gotten round this by using a Virtual Machine or a second PC as a slave capture device with the main PC doing all the control of the mount (as well as the first camera).  Excellent used laptop PC's can be had for a hundred quid or so off of the bay, or look into using a Raspberry Pi.

Thanks. 

I'd hoped for an integrated (one on mount computer) salutation but Atik are reluctant to create a 3rd Ascom driver. 

After dropping QHY for Atik seems they now support 4 cameras. 

I've started using the 1st cooled camera I bought for guiding the very reliable SXVh9 but this is bigger than the GP meaning would hit the roll off roof if not removed when opening and closing! 

Peter