NGC 6992 HO using OSC camera - WIP

[Star101]

Last night we had some clear skies for the two hours of darkness, even if the moon rose around midnight.

I decided on the Eastern Viel Nebula, NGC 6992 as it was already high enough to image. Nothing more

C11 with Hyperstar, Atik 4120EX OSC camera and Baader f/2 High Speed Narrowband 2" filters

I had setup the C11 with Hyeprstar a few nights ago. The Atik 4120EX already sat there waiting. I slew to NGC 6992 and took a 30 second sub at f/2. The viel was very faint even at 4x Bin. S0, I decided to try slipping a OIII between the Hyperstar and the camera. I could see there was a better chance. I set up for 300s subs. After 12 Subs, U replaced the OIII with a Ha. I checked all was running OK and went to bed

Just a quick check. I processed in Pixinsight. Although this is a one shot colour camera, I processed the Ha and OIII images separately.  Split the RGB and took the R from the Ha and G from the OIII images. The recombined the two images as HOO to produce this.

I also imaged with the ZWO 183mm Ha and OIII on the TS65Q at the same time but yet to process.

Clouds spoilt a few subs and sunlight too 😎

 

12 x 300s OIII

15 x 300s Ha

Camera  ATIK 4120EX OSC

Scope  C11 with Hyperstar ( f/2)

Guided using TS65Q with Lodestar X2 on ZWO OAG.

Mount Mesu 200

Processed in Pixinsight

Thanks for looking.

 

 

[ollypenrice]

What about using the blue channel from the OIII filter as well? I don't know the bandpasses of your particular Bayer matrix but OIII lies on the blue-green borderline. I add OIII to green and blue.

Olly

[Gina]

I do too unless I'm using Hubble palette.

Edited June 21, 2019 by Gina

[Star101]

2 hours ago, ollypenrice said:

What about using the blue channel from the OIII filter as well? I don't know the bandpasses of your particular Bayer matrix but OIII lies on the blue-green borderline. I add OIII to green and blue.

Olly

This was a quick process Olly, Not sure if I did use the OIII in the Blue and just not say here, but now you mention it, I will go back and check.  

[Star101]

Here's the final image. HOO, With most stars removed.

Thanks for looking.

Dave.

[Star101]

Final attempt with this until I get more data

As you may be aware, I took two versions of this object. This one, C11 Hyperstar, OSC Atik 4120EX colour with High speed Ha and O3 filters. Resulting image shown above. I also took the same image using TS65EQ and ZWO ASI183MM Pro with Ha and O3 filters.

Here, I have combined the two images using NBRGB Combination in  Pixinsight. This should really be called Mono HaO3 and Colour HaO3  But hey, its just fun

I'm undecided on the outcome to be honest.

The ASI 183 camera took 15 x Ha and 12 x O3. Image can be found here

Thanks for looking

Edited June 22, 2019 by Star101
spelin misteak