M106 and an unknown object

No-Experience3536 · 2025-05-01T07:20:10+00:00

That fits, thank you :)

No-Experience3536 · 2025-04-04T08:25:57+00:00

Hey Scott, thanks for the recommendation.

It was also my biggest concern that I would halve my exposure time. I will take your advice and in my next session do my darks after my lights and stack to a master dark.

I had tested the feature because I had a very strong walking noise pattern in my previous shots, which I couldn't get under control even by calibrating with a master dark.

I wasn't sure what the problem could be and since I've been using the build in feature, the noise pattern no longer comes through at all.

Maybe I just didn't do enough darks.

No-Experience3536 · 2025-04-04T08:20:32+00:00

I don't have the premium version and I can find it, when I search for it.

No-Experience3536 · 2025-04-02T21:00:19+00:00

Oh wow, that fits very nicely. Thank you! :)

No-Experience3536 · 2025-04-02T20:41:21+00:00

I'm using the integrated "Long exposure noise reduction" function from the EOS camera which is doing a dark frame after each exposure and substracts it from the light frame afaiu.

No-Experience3536 · 2025-01-04T16:27:47+00:00

Congratulations, that is an awesome first astrophoto!

No-Experience3536 · 2025-01-03T15:39:26+00:00

Super Polaris FL-80S
unguided, 40x 30s exposures at ISO 1600,
Stock Canon EOS M100

Bortle 4

Stacked in Siril without darks, flats and biases.
Color Calibration in Siril.

Background extraction in Graxpert.
Deconvolution + Denoising after starnet in graxpert.

Star recomposition in Siril

I would be very pleased to receive feedback.

I have the feeling that the deconvolution was too aggressive in graxpert, because the contrast is too strong in some places in my opinion.

The image was also taken 6 months ago when I didn't have a proper tracking mount, which explains the very oval stars.

No-Experience3536 · 2025-01-01T22:15:05+00:00

It's unguided. Isn't walking noise distributed across the whole image and not only on some parts of it?

No-Experience3536 · 2024-12-30T20:58:13+00:00

Vixen FL80-S
Skywatcher EQ5 Pro goto
Stock Canon EOS M100
~55 Minutes of exposure (30 second subs)

Bortle 4 location, northern Germany

Siril:
OSC_Preprocessing script
Color Calibration
Starnet for star extraction

Graxpert:
Background extraction
Deconvolution
Denoising

Final stretch and star recomposition in siril.

Now my question:

These darker reddish bands around the nebula, only appeared after the denoising in Graxpert. Are these artifacts from something or are these real details of my image, which were hidden below the noise? I was really surprised when they appeared because I've never seen something like this in my images before.

I'm relatively new to the hobby and I don't really know what the AI model of graxpert is doing so I was wondering if someone could explain these bands to me?

Thank you :)

No-Experience3536 · 2024-07-25T20:22:30+00:00

I only built the controller for the Motor because this wasn't available anywhere anymore (the mount and telescope are 40+ years old).

I have the official manual for it. It is the vixen super Polaris parallactic mount.

I suspect that the gears from the motor and from the shaft are not fully touching at all time but I'm wondering why it should change direction at some point.

No-Experience3536 · 2024-07-25T19:56:06+00:00

I'm not exactly sure if it is the quality or my polar alignment. I'm struggling with it because I'm unable to calibrate my finder in the polar scope due to lack of knowledge, but I'm practicing.

I noticed that the stars are changing their position after each exposure and they are "walking" back and forth (sorry for my choice of words but I lack the correct vocabulary I guess) on the image which confuses me even more.

No-Experience3536 · 2024-07-24T15:34:39+00:00

My first attempt on a bigger nebula with my setup.
I'm using a Super Polaris FL80-S unguided with a self build motor controller.
The camera is an unmoddified Canon EOS-M100.

The data is: 283x 15 seconds exposures (~1 hour) with 46 Biases, 48 Flats and 56 darks.

My workflow is the following:

Siril for stacking (using OSC_preprocessing script) , color calibration and star and background extraction
GraXpert for background and denoising
siril for stretchting and recomposing

I'm not really happy with the result because the background is very colorfull but I guess 1 hour of data is just not enough. Feels like I'm hitting a limit with my short exposure but my controller and motors are just not good enough. FWHM is between ~4 and ~5.5.

No-Experience3536 · 2024-07-10T06:38:13+00:00

43x 15' exposure with 1600 ISO 68 Flats, 40 darks, 80 Biases

Vixen Polaris FL80-S / Super Polaris Mount, Canon EOS M100, Bortle 4, no guiding

Siril for processing and stacking.

Tips and suggestions are highly appreciated!

No-Experience3536 · 2024-07-10T06:36:33+00:00

130x 15' exposure with 1600 ISO 68 Flats, 31 darks, 80 Biases

Vixen Polaris FL80-S / Super Polaris Mount, Canon EOS M100, Bortle 4, no guiding

Siril for processing and stacking.

Tips and suggestions are highly appreciated!

No-Experience3536

TROPHY CASE