NGC4217

[Jkulin]

I have seen very few images of this subject, most seem to be with M106, I did think about taking it in portrait mode, but I rather liked the way the stars danced across the screen.

I have learnt some new techniques which have helped immensely and I am rather pleased how this has turned out.

Again, taken with my GSO/Altair 10" RC Truss, iOptron 120EC, Moravian G2-8300, Pegasus UPB, Chroma 2" Filters, more details here: -

https://www.astrobin.com/k4i9un/

Here's the capture details: -

GSO/Altair 10" RC Truss
Moravian G2-8300 Mk!!
Chroma 2" Unmounted LRGB
iOptron 120EC
Lodestar x2 Gudie Camera
QHY-M OAG with Custom adapters

Dates:April 23, 2020 ,  April 24, 2020

Frames:
Chroma Blue 2" unmounted: 21x390" -20C bin 1x1
Chroma Green 2" unmounted: 21x300" -20C bin 1x1
Chroma Luminance 2" unmounted: 24x300" -20C bin 1x1
Chroma Red 2" unmounted: 21x348" -20C bin 1x1

Integration: 8.1 hours

Darks: ~30
Flats: ~25
Bias: ~100
Avg. Moon age: 0.81 days
Avg. Moon phase: 0.97%
Bortle Dark-Sky Scale: 5.00
Mean SQM: 19.51
Temperature: 8.37

Here's the bumf as usual, although there isn't a lot around: -

NGC 4217 is an edge-on spiral galaxy which lies approximately 60 million light-years ( 18 million parsecs ) away in the constellation of Canes Venatici. It is a possible companion galaxy to M106 (also known as NGC 4258).

[bob-c]

A cracking image ,lovely colors and processing.

Bob.

[tooth_dr]

Hi John

I first noticed this when I was imaging m106 last year. This year I made sure it was framed along with M106. It’s quite spectacular.  The colours you have in the stars is fabulous. 

[Jkulin]

Thanks Bob, I like to capture things differently and this one deserved the time to do properly

[tooth_dr]

Also just wanted to add - do you have Links to your new techniques.  It definitely working 

[Jkulin]

Just now, tooth_dr said:

Hi John

I first noticed this when I was imaging m106 last year. This year I made sure it was framed along with M106. It’s quite spectacular.  The colours you have in the stars is fabulous. 

Thanks Adam, you wouldn't believe how many times I reprocessed this in Pixinsight, and last night at 03:10 in the morning I said enough.

The biggest issue I have always had was noise and I really failed at that miserably and this video on YouTube, explained it so easily, hope the link helps.

I'm working on another cracker at the moment with around 15+ hours of data and hopefully will be able to put these new techniques to good use, I did try APP, but haven't really got to grips with that yet.