Request for help checking Astrobin first discoveries

Hunting Horn avatar

Please could I request your help and advice?

There are 3 images and I would like to know if they were

Astrobin firsts when they were posted.

O III arc 7° long in HOO near SNR G206.9 + 2.3

https://app.astrobin.com/u/huntinghorn?collection=45383&i=u6vxdd#gallery

Silk Nebula in OIII 15° long

https://app.astrobin.com/u/huntinghorn?collection=45383&i=zwfplw#gallery

Ha arc 3.7° wide

https://app.astrobin.com/u/huntinghorn?collection=45383&i=1euqng#gallery

Please would you tell me if they are Astrobin firsts and how to check?

Brian Puhl avatar

Just search for the targets and sort by field of view. Or, you can sort by RA/DEC easily enough. You only need to click on the RA and DEC in your image stats.

📷 image.pngimage.png

Your Oiii arc is here:
https://app.astrobin.com/i/1edk3h

The Silk Nebula appears to be just you:
https://app.astrobin.com/search?p=eJxNjs8KgzAMxp%2BmHsX%2Fnjw4vQje9AVCm81C10pbx9yDDvY2a1fZBiH5kl%2FIl9eTKqWZaUh9IlmmoUNpUTtJ8raoijipK5J1rmdI%2F1laxWUZiAbGNxPGOan7aIULNumnTPzhZJJEFu%2F2MLmB2DCs%2B%2BzDn7mCpcu8rz%2FUjuOXKin2CUHTZZAztwJNK1mPhmq%2BWq7k4X8GYdD98AasUj%2Fo

Here is your Ha arc from someone else:
https://app.astrobin.com/i/5la4nq



Also, it’s worth noting that all of these structures are quite bright in the NSNS surveys.

Hunting Horn avatar

Dear Brian,

How kind of you to take so much trouble over a reply.

Your explanation is really helpful and thank you for working through the three examples.

Yes, the Northern Sky Narrowband Survey at https://www.simg.de/nebulae3/index.html is really good.

God bless you, Sean

Well written Respectful Supportive