NGC 3572 - Open Cluster

[jsmoraes]

Constellation of Carina

GSO 305 mm - Canon T3 - ISO 800 - 10 x 3 min (30 min) - Skyglow filter - OAG - Coma corrector

Hogg 10 - right bottom

note: no information from clouds around were captured.

See this, from 2.2 meters ESO La Silla Chile : http://astronomia-e-astrofotos.1069742.n5.nabble.com/file/n2017/ngc3572-ESO.jpg

[Coco]

Congratulations on getting that huge scope and large sensor setup and running well, are you using the ASI120 for off axis guiding?

[jsmoraes]

Yes, this is the photo of the set: coma corrector + OAG/ASI + filter weel + Canon 1100D

[Coco]

Thanks, that picture is a real time saver ..

[lensman57]

These are amazing images. The star shapes unlike my images are real good too. May I ask what coma corrector you are using and what is the back focus of the CC?

Regards,

A.G

[jsmoraes]

I am using the GSO  2 " coma corrector. Its is not like a badder MPCC but it work well and it is very less expensive.

The nominal distance from surface of coma corrector and surface of sensor is 75 mm. It can work with 65 - 85 mm, although. I am with 83 mm, because of filter wheel and OAG.

This coma corrector has a barlow effect of 1.14x. And just because it, i got focus with my Canon T3.