NGC6888

It has been a tough couple of weeks wondering what the hell is wrong with my set up, and subsequently been a while since I posted any astro images, A power supply problem caused a few strange issues with the imaging camera, but all resolved now and running on full power again. Eager to capture some photons the dome was rolled back over the weekend and captured 6 hours worth of data on an amazing emission nebula. Ngc6888 is also known as the Crescent Nebula, but for me it resembles a jellyfish adrift on an ocean of stars. The colours you see here are 2 specific wavelength's of light Hydrogen (red) & Oxygen (blue), both are shells of gas produced from violent stellar winds from a star at the heart of this cloud.

Once again I have found a you tuber who has a great and easy to follow workflow. This time it was https://www.youtube.com/watch?v=S6lo2AJcHkU&t=1s

The Crescent Nebula.

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away. It was discovered by Friedrich Wilhelm Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

Captured with the new ZWO ASI294MC Pro and Esprit ED100 and controlled via the ASI air pro. An amazing piece of kit, Those of you who are thinking about one to use with their ZWO cameras and many DSLR's I cannot put into words as well as a cut and paste. Coped from the website from Widescreen-Centre where Simon & Julian have been amazing with my questions and ultimate order from them, throughout their service, advice and professionalism has been superb.

ZWO ASIair PRO Smart WIFI Accessory for Portable Astro Photography with ZWO ASI Cameras and dSLRs

NEW FEATURES OF THE ASIAIR PRO

PRO SOFTWARE FEATURES

The new Asiair Pro comes with amazing new features such as Live Stacking, Automated Meridian Flip and more!
The Asiair app is compatible with iOS, iPadOS and Android, plus through emulator software you can run it on Apple laptops or computers as well.

IMPROVED STORAGE

A 32GB TF card provides 20GB free space for the user, plus the included 64GB U-Disk (USB memory) provides additional storage. If necessary, further storage can be added by user provided external storage.

POWER OUTPUTS / INPUTS

DC 12V@5A (Min voltage is 11.5V; Max supported current is 6A).
4 output ports; 12V input is recommended, but do not to exceed a total of 6A on all ports, as too high current will cause overheat problem.
The voltage and current of power outputs are 12V@3A.
The port type for the power outputs is 2.1*5.5mm center positive.

IMPROVED MOUNTING

ZWO redesigned the case for easier and more stable mounting by using the dovetail bar on your scope or a clamp.

NEW CNC-MACHINED ALU CASE

A beautifully designed and machined CNC case contains the new electronics. Aluminium is excellent for dissipating heat, whilst there is almost no effect on the WIFI signal.

So after that I am sure you have convinced yourself that is an amazing bit of kit. 

33x 5 minute guided exposures using the Optolong Lenhace narrowband filter has brought out details never capture previously by me. Stacked in Deep sky stacker and processed in Photoshop. 

Ngc 6888 The Crescent Nebula

Some targets just need a little more than a DSLR can deliver. I think the crescent nebula is one of them. Last year I tried this target, never published the image because I was not happy with the result.
Despite the guiding working well and subs of 5 minutes I am still not entirely happy with the amount of data collected. There is some indication of some tenuous nebulosity surrounding the nebula.