Hallingskies

I did the mod and now the mount judders in RA. Haven’t tried too hard to get to the bottom of it yet as I am using another mount, but it’s frustrating and I wish I hadn’t bothered.

Thanks for the reply. I wondered if the diagonals were a usb issue but it seems the same on several different laptops.

This is a master bias frame made from 50 exposures, sigma stacked, from my SX-694. With the dead column and diagonal banding, it seems a lot less smooth than the bias frames from my Atik 460. It doesn't seem to give a problem in the final image but I just wondered if the SX is firing on all cylinders...? Any opinions, anyone?

Yes. Next question?

Taken at Cuxton, Kent, on the evening of June 23rd, Canon 450D, 6s at f6.3.

Remember why the lorry park was built in such a rush? It must be those sunlit uplands lighting up the sky at night...

Here’s Prof Cox in action. Or is it? I can never tell these two apart...

Prof. Cox always reminds me of that Paul Whitehouse character from the Fast Show who used to stroll through random backgrounds while babbling on about how “BRILLIANT” things are.

I’ve just done this mod myself and I don’t get the ticking noise. I just wonder if the noise is the cog skipping over the belt teeth? You should be able to loosen the pulley plate to adjust the belt tension without taking too much apart.

Am I alone in being unable to open the FITs luminance data in Astroart? The RGB data is fine.

I think the threads on the filters (if threaded) should point towards the lens but in practice I’ve found it doesn’t make much difference. But yes, there seems to be a big difference in focus position between makes of filter. I had the same problem with Baader LRGB and an Astronomik 12nm Ha - the narrowband was off the mark. When I swopped it out for a Baader, all was good. On the f2’s, yes they do seem to give brighter images when used at f2, but I see no difference to the standard 7nm filter at f2.8, which is where I tend to use the Samyang anyway.

Not sure if this helps but my Win 10 laptop disabled USB outputs if they weren’t in continuous use. There are options in the power management menu to stop that pointless and typically Microsoft aggravation. I had no end of trouble with my ATIK kit in Win10 until I did that.

Not seen that one before, nicely done. SkyMap Pro is just brilliant for browsing for targets, isn't it?

l definitely agree with your comments above. Using the Samyang with an Atik460 is hugely undersampling and stars are a bit blocky at the best of times. That said, I usually use Starnet in wide-field image processing. I give the star layer a bit of a Gaussian blur and then do a bit of reduction before pasting it back in to nebulae pics. This tidies the stars up no end.

...there's never a moon around when you want one...