California Ha - Nikon D600am

[Herra Kuulapaa]

It was partly clear last night once again and the NGC 1499 was high enough to take a few hasty subs between the clouds.

Seeing was not too great and it's visible in subs, but rather nice stack after all. 12 x 600s, ISO500, Nikon D600am (astromono). It could use more light though..

[xtreemchaos]

WOW thats stunning. well done mate. thanks for sharing  charl.

[seo]

Very nice image and work.

[Herra Kuulapaa]

I could push it little bit further, but I like to keep is dusty like this. It's just a thicker part of all around existing Ha mist even though it's usually clipped out.

[ChrisLX200]

Good work! I sthis using a Ha filter then?

ChrisH

[Mr Spock]

Lovely image.

[Herra Kuulapaa]

Good work! I sthis using a Ha filter then?

ChrisH

Yes, 12nm Astronomik. I have so strong LP here that narrow band is the only method.

[michaelmorris]

Great image.

[theo]

That's a very nice image. Well done!

Pete

[swag72]

Very nice!  I like it

[fwm891]

Great image Herra - that 600 is working well - very responsive

[laudropb]

Very nice image. Thanks for posting.

[Herra Kuulapaa]

I have noticed that my trusted 65mm f/6.5 quadruplet scope is not anymore on a par with the camera gear.

So, I have started to look for a replacement, but it’s not so easy to find a lens scope with:
- Full frame size flat field
- Enough backfocus to fit filterwheel+DSLR
- Option to go wide, like 400mm

I have checked the TAK106ED, but the reducer backfocus distance seems to be inadequate to my specialized needs. I simply cannot fit filter wheel there.

Do you guys have any ideas?

[swag72]

WO Star 71? There's a few of these knocking about now and they look great!

[Herra Kuulapaa]

Thanks Sara,

I'm tempted switch to 71mm and again some f (6.5->4.9) even though the FOV would stay approx the same.

Back to TAK, it's a shame that the reducer has so "little" backfocus. 72.2mm would be enough from M48, but M56 and filter wheel step down and DSLR adapter - they make lots of mm's.

Spec. FSQ-106ED Opti With QE-Reducer Focal length 385mm Focal ratio F/3.6 Image circle 44mm Photo field 6.5° Metal back 72.2 mm

[michael.h.f.wilkinson]

Very nice result.

[Herra Kuulapaa]

I took more subs last night, but with a different camera (D800am). It will be interesting to see how these different resolution (24MP and 36MP) sensor outputs match each other. I think I’ll do a combined stack based on D800am frame (D600am data aligned and slightly enlarged) and then reduce the resolution with sharpening. This way I can benefit from a slight D800am sensor resolution edge, perhaps..

[Herra Kuulapaa]

A starless version

[Starfisher]

very nice IC1499 shot. hop you can get more data to color it

[Herra Kuulapaa]

Hopefully weather allows me to get that dim OIII channel as well. Usually November and December have been real bad months for this hobby.

I got the extra subs I mentioned with D800am and combined them to D600am data. I think it resulted a small improvement in background, but also introduced halos on stars. It was very wet night and I noticed my lens had dew when I was taking my stuff down - heater connection failure I guess..

[MartinFransson]

A starless version

Beautiful! How do you get the starless version so good? I always get a lot of residuals. Maybe my stars are too big.

Sent from my phone using Tapatalk

[Herra Kuulapaa]

A lot of manual star by star residue fixing

[Fay]

That is fantastic, really like it!

Fay