tooth_dr

What guide camera are you using?

30 minutes ago, paul mc c said:

Not even worthy to comment on this......amazing.

Thanks Paul, but nothing that you couldnt do yourself 👍

I debated whether or not to post this, but given that it's my first SHO image, I thought it might be worthwhile.  This is crop from the large image.

I used the guide for adjusting colour in Steve's book (Dark Art or Magic Bullet) and it worked really well.  I'm always open to advice.  Please please post any observations that might need improving

Skywatcher ED80, 0.85x reducer, Atik 383L+ and QHY9M, EQ6.

Taken during the perio of 94-100% moon.

72 x 600s Ha

17 x 600s Oiii

18 x 600s Sii

Thanks for looking

Clear Skies

Adam.

22 hours ago, carastro said:

It's been my experience with NB filters, that from a LP location even then only the bright targets can be done.  Sometimes Ha will be OK on the fainter targets but not the Oiii and Sii.  

I think I recall you are moving to a LP location.  You might be interested to see a website I made solely for images I have done from Bortle 8, it might give you some sort of guide.  A number of targets I just had to abandon from home.

https://sites.google.com/view/carastroimaging/home

Carole 

Thanks Carole, I've had a look at your site, it is inspiring to say the least.  Re house move, that's currently off the cards, so I'm stuck at my Bortle 4 location for the time being.

Have you got the figures entered correctly into phd for the equipment profile so that the graph etc is accurate?

I normally use the phd target as a guide to my star shapes.  I think your circle of stars on the target looks a little taller than wider. This would certainly support the stars even still being slightly elongated.  With those figures you’d expect round stars given that RA and Dec are equal.

https://secure.investni.com/static/library/invest-ni/documents/northern-ireland-space-strategy.pdf

https://www.siliconrepublic.com/companies/robert-hill-northern-ireland-space-office

@Peje Robert Hill wouldn’t be a bad starting point. 

27 minutes ago, carastro said:

Very good Oiii and Sii in that case with a full Moon.

Carole 

Thanks Carole. I can’t wait to get a better night to take better data. 

Fantastic. Totally fantastic. You must be delighted now !

Ive now got a 178mc so I do find this thread inspiring! Any spare housing lol 

That’s a cracker! Stars removed flawlessly

Class, even with the moon, it’s come out super 

3 minutes ago, wimvb said:

That must have affected the Oiii data a lot.

The Oiii data probably, but the Sii is deep red, and shouldn't have been affected any more than the Ha.

It was literally the full moon, images captured on the 13th 😂 but just shows that even with the moon it’s still feasible to get out there and do something. 

3 minutes ago, wimvb said:

Here's my attempt using PixInsight

The Oiii and Sii seemed already stretched.

• alignment of the channels
• Ha stretch (applied screen transfer function as permanent stretch)
• sho combination
• scnr green
• saturation boost
• noise reduction
• star reduction
• resample

Amazing Wim!

 I know what you mean about already stretched, looked like that to me too. But it was straight out of APP with no DPP etc, just raw stacks.  Maybe due to high background levels from moon?

Just now, Star101 said:

From my attempts. I enjoyed working with your data. It's much better than mine lol.

How many subs and what length where they?

Thanks! I don’t think my Oiii or Sii was good but I was happy with the Ha.  All data unbinned and taken during bright moon this week.

Ha 72 x 600s

Oiii 17 x 600s

Sii 18 x 600s

This is the Oiii and Sii data

I cropped it a bit, and processed it again.  S=red H=green O=blue.  Tone mapped the colours.  Couldnt get a luminance from the layers, so just ended up using Ha as the lum.

Here it is:

53 minutes ago, Jkulin said:

Hi Adam, I had a go but failed miserably, Carole's job was really good, I grabbed that as I couldn't couldn't do any better and just removed the magenta and a touch of green: -

 

Again John, thanks for having a go.  I really like the colours, the blues are lovely. I've spent a couple of hours at it now, and going to stop now, and come back it again, may be with better Oiii and Sii data.

11 minutes ago, Star101 said:

Only my third attempt with NB....Thanks for the data.

 

Thank-you!  Much better than mine.  I'll need to get better Oiii and Sii data, and probably longer subs wouldnt hurt.

Just now, carastro said:

I don't tend to try match these type of images as the signal is often pretty poor from the Oiii and Sii channels.

I just process each the best I can and then combine.

This is what I got with your data.

 

 

Honestly Carole that's about 10^6 times better.   How does the Ha data look?  The other data is really really bad.

IC1805-Ha.tiff

Just now, wimvb said:

Is the Ha data still linear (ie, not stretched)?

No the Ha has been processed. I’ll attached linear data now. 

Pretty impressive John! I like the moody and muted colour scheme (don’t look at my recent version of this lol)

6 minutes ago, Jkulin said:

I tried to time the filters for when the moon was more prolific.

An interesting choice, making life harder for yourself?

I have some Ha Oiii and Sii data for the same target.

I've never had this before so I'm new to this type of processing.

The Oiii and Sii data is challenging.

What figures are we trying to match in the 3 three stacks before combining?  Is it background brightness or what exactly?

Anyone fancy taking a look at it you have nothing better to do?  I've attached the aligned stacks of Oiii and Sii, plus my processed Ha data.  

Here is my attempt after an hour of processing it in PS.  I'm not sure how to improve, maybe I'm still too far off for help

CS

Adam.

IC1805-Ha.tif IC1805-Oiii.tif IC1805-Sii.tif

Hi Chris. I used to go with your current configuration but then purchased this:

https://www.firstlightoptics.com/adapters/flo-adapter-for-skywatcher-focal-reducers.html

You can screw 2” adapters onto the end of it.  You will need to reattach the 2” holder bit back onto the focuser tube.

As an extra I added this:

https://www.firstlightoptics.com/adapters/baader-click-lock-2956256-m56-celestron-skywatcher.html

It screws directly onto the metal drawtube.  This is very secure and also easy to rotate camera or swop over.  It eliminates the original part (which isn’t very safe imo)

HTH

Adam 

I really like the lion nebula. Both are excellent.

For me, and I know very little, the reprocess shows more detail especially in the gold but the blue is a little too strong for my taste.