Wyvernp

Wow Dave. That's a set of images to be proud of.

That is definitely an improvement. What process did you use to reduce the noise?

I used MultiscaleLineartransform on the Ha component on mine. perhaps not enough.

I have to say I'm not happy with the Ha data overall. I'll probably revisit this as soon as it's in my FOV from my back  garden but with 20m exposures

In the meantime I have reprocessed and come up with this which I think is a little better.

Good stuff. Thank you!

2 minutes ago, Adreneline said:

Everything downloaded except Blue for some reason. Strange

 

Try now

Sure thing,

The HA was taken at a couple of camera angles hence the crop.

Thanks in advance for the assistance.

masterLight-BINNING_1-FILTER_Green-EXPTIME_60.fit

integration_Ha.fit

masterLight-BINNING_1-FILTER_Blue-EXPTIME_60.fit

masterLight-BINNING_1-FILTER_Red-EXPTIME_60.fit

Afternoon All,

This one has been quite a while in the making as it seemed to get brushed to the bottom of the imaging pile, I finally pulled my finger out and finished off taking the RGB subs for the stars. and  couple of extra Ha subs.

https://www.astrobin.com/psc4hq/?nc=user

Antlia Ha 3.5nm 36mm: 112x360" (gain: 139.00) -15C bin 1x1
ZWO 36mm Blue: 16x60" (gain: 139.00) -15C bin 1x1
ZWO 36mm Green: 16x60" (gain: 139.00) -15C bin 1x1
ZWO 36mm Red: 16x60" (gain: 139.00) -15C bin 1x1

Please do feel free to critique, it's mostly why I upload these as it's the best way to learn.

Wyvern

That was nice clean data to play with and gradients aside a great image.

Here's my take on on the data after giving it a quick process in PI

Cheers,

Wyvern

On 11/10/2020 at 11:46, red dwalf said:

what back focus distance did you settle on ?

63.5mm produces a nice flat field for me.

6 minutes ago, Greg Shaw said:

How are you getting on with this camera and filter wheel setup?

I am considering getting this set up. Have you managed to sort everything out?

Yes indeed.  It is now fully operational and works really well.

The the main issue with the stars was simply backfocus, the 31mm adapter tht comes with it is just too long for my scope so I had to buy some adapters and m48 spacers.

The second issue I found was that this camera does not like being connected to USB hubs or extension cables, or at least mine didn't.

Afternoon, 

Thought I may as well throw my hat in the ring as well.

I used a bit of a custom channel mapping with this one, but it's roughly R=Ha, G=SII, B=OIII

Unfortunately I don't really have a process to share as I tend to just do stuff until I like the look of it.

Final polish was in photoshop which was just some levels, saturation etc.

Wyvern

Thank you for all your Kind comments!

After a few pretty nice nights I've managed to capture M31and M33 in HaRGB and M45 In RGB

M31

20x R 240s
20x G 240s
20x B 240s
20x Ha 300s

M33

20x R 240s
20x G 240s
20x B 240s
20x Ha 300s

M45 

30x R 240s
30x G 240s
30x B 240s

I'm liking how each has turned out. Feel free to pixel peep and be brutal

Wyvern

If you haven't watched this already it should answer all your questions. 

Really Really nice! I had no idea there was anything other than Ha in this object. Still collecting data for this one and I will add SII to the mix. Thank you for sharing!

Very nice too, love the star colours and some nice nebulosity showing.  This is a hard collection of nebulae/star clusters to frame, I'm currently imaging this myself and am not as happy as I could be with it.

Just wow! fantastic result and thanks for the info about it too!

@DaveL59 snap!

6 minutes ago, MarkAR said:

 

This could be the key, I didn't put in a IP address on the Pi wired connection.

Just looked at my two laptops wifi settings, IPv4 is 192.168.1.xxx (last is different on both) Router is 192.168.1.254

What should I set the LAN wired connection IP's to ? 192.168.2.XX same on the Mac and Pi or 192.168.2.YY on the Pi ? 

That's exactly it, just make sure the subnet mask is the same, default is 255.255.255.0

6 hours ago, MarkAR said:

Okay, looks like I have to admit defeat regarding connection with ethernet cable direct.

I've tried this and similar

https://medium.com/@tzhenghao/how-to-ssh-into-your-raspberry-pi-with-a-mac-and-ethernet-cable-636a197d055

Problem is Thunderbolt Bridge won't work, LAN 10/100/1000 shows a connection but there doesn't seem to be any traffic, lastly the nmap command this guy uses isn't recognised by Mac Terminal.

Is it possible to connect through an old router ? i.e Pi to router to Mac. Just straight Lan connection not over internet.

Other than that it all seems to work over wi-fi. Trouble is when I get in position in the garden I'll probably have signal difficulties and the Devolo devices I have are not reliable. Hence the need for cable connection.

I'm not a mac guy but I do know a thing or two about networking. 

How have you set up the IP addressing on both the mac and the pi? 

Had a quick play in Pixinsight and there's actually quite a bit of data here! It looks like you have a bit of coma which is deforming the stars, I haven't used camera lenses for astro so not sure I can advise what is the cause.

Anyway here's my take on your data.

Could it possibly also be the barlow magnifying the effect of coma? or even affecting the backfocus distance? Do you have any pics taken without the barlow to compare with?

The only reason I ask is that when I use filters I have to account for their thickness in the backfocus calculations, I'm not sure if the same applies to a barlow?

edit, missed that you were usung the mpcc III corrector

Hi,

It does seem to be some sort of aberration, what scope/correctors are you using? and also is your camera sensor at the correct backfocus distance? don't worry if you don't know the answe to the last one as we can probably help figure that out.

Wyvern

Calibration and stacking will be no different, the only time I can think of that it changes will be the additional step of combining when using a mono camera which isn't the case here.