NGC 5128 - Centaurus A

[evltoy]

Hi All,

It has been sometime since my last image. This was shot over 3 nights with the 2nd night being the most productive.

Stars once again are not as round and had a do a big crop. I'm struggling to get the right back focus. Please give me some hints if use my setup

Let me know what you think

Capture details:
Date: 29/04-01/05/21
Location: Officer, VIC.
Mount: nEQ6-Pro
OTA: Celestron C8 + reducer/corrector
Nikon D600 (APS-C mode)
Guided: ASI462 & ZWO 60mm scope
ISO: 800
Lights: 106 @ 150sec (4hrs:32min)
Darks: 70 (30, 25 & 15 each night)
Flats: 90 (30, 30 & 30 each night)
Bias: 30
Bortle: class 6 (clear outside app)
Lunar: 60%
Post work: DSS & PS

Cheers
Wayne

[Sunfish]

Looks pretty good except for the focus. Do you cool down , use a bahtinov mask and a dew heater?

[Sunfish]

Also guiding with a guide scope on that focal length is a challenge, an OAG gives better guiding but is more complex.

[evltoy]

Hey Sunfish - I do use a use a bahtinov mask and I did use a dew heater for the very first time on the main OTA and on my guide scope.

Cool down? I leave about 5-10sec between exposures. I take the darks straight after lights are done, but the rig is covered and left outside for the rest of night. Flats are taken the next morning