Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

Messier 106 and the furthest deep sky object that I ever imaged


Recommended Posts

Hello again,

As the galaxies are starting to get higher in the sky, I started to point my telescope a bit more towards them. The first that I can say I have enough data to produce a decent image is M106.

Because @wimvb pointed out that my M97-M108 photo had some objects that are very far away, I took the liberty to go online and try to find how far some of the objects in this photo are.

I was quite shocked to find that I captured a 19.5 magnitude quasar, 7C 121446.70+472852.00. I added it in white writting to the annotated photo and I also cropped a part of the large photo to show it better.

This is by far the furthest deep sky object that I ever imaged and also in the crop photo there are a few galaxies that are more than 2 billion light-years distant.

M106 - 21.5 Mly;
NGC4217 - 61.6 Mly;
NGC4220 - 44 Mly;
NGC4248 - 24.5 Mly;
NGC4232 - 336 Mly;
PGC2296601 - 338 Mly;
PGC213962 - 428 Mly;
PGC2297038 - 932 Mly;
PGC2300151 - 2,455 Mly;
PGC2299019 - 3,746 Mly;
PGC2299122 - 3,814 Mly;
7C 121446.70+472852.00 quasar - 12 Bly.
 
Eq6 hypertune gen2 by DarkFrame Ltd
AstroTech 106LE with upgraded Moonlite focuser
TSFlat 2" field flattener
ASI294MM Pro Cmos camera, cooled at - 15°C
8x1.25" ZWO USB filterwheel
Chroma 1.25" LRGB and 3nm 1.25" Ha filters
Qhyccd QHY5L-IIM guide camera
9x50mm finder-guider
Qhyccd Polemaster
 
Software used:
Eqmod, SGP - Sequence Generator Pro, PHD2, Stellarium with stellariumScope, SharpCap for polar alignment
 
Date: 22.01 to 04.02.2021
 
Location: Bushey, bortle 7
 
Ha: 14x300sec, Gain 200 Offset 10
Luminance: 34x300sec Bin 2x2, Gain 125 Offset 30
Red: 30x180sec; Green: 31x180sec; Blue: 31x180sec; Bin 2x2, Gain 125 Offset 30
 
Total integration time 8 hours and 36 minutes
 
Emil
 
2132543405_M106-HaLRGB(watermark).thumb.png.8bc69bbc9b663bc60a1fc04e6928f97f.png
 
M106_HaLRGB_watermark__Annotated.png.thumb.png.082e1e8a99a220d824a853bea9b4ea43.png
 
M106_HaLRGB_watermark__Annotated-(crop-quasar).png.thumb.png.94477295300c9d8b81159f9a31d384fd.png
 

 

Edited by emyliano2000
  • Like 23
Link to post
Share on other sites

Very nice, this is one of my favourite targets to image, yet I've never managed an image that I'm satisfied with.

I hope that having a dual rig now will help eliminate that once I get some clear skies.

  • Thanks 1
Link to post
Share on other sites
2 minutes ago, geordie85 said:

Very nice, this is one of my favourite targets to image, yet I've never managed an image that I'm satisfied with.

I hope that having a dual rig now will help eliminate that once I get some clear skies.

Thanks. I could've probably done with a bit more data on it, being under bortle 7 skies, to be honest but I was so excited to see how it looks so far that I decided to stack and edit 😁

Emil

Link to post
Share on other sites

Nice!

40 minutes ago, emyliano2000 said:

I could've probably done with a bit more data on it, being under bortle 7 skies, to be honest but I was so excited to see how it looks so far that I decided to stack and edit 😁

Try to get 20 hours or more. Once the noise gets less, all kind of redshifted galaxies pop up, many of which aren't catalogued. The great dipper is a real treasure trove for distant galaxies, and not having a long fl actually helps, because it allows wider vistas.

Btw, what is your source for the galaxy data? Be aware that redshift for quasars for some reason isn't the same as for galaxies; it overestimates their distance.

Edited by wimvb
Link to post
Share on other sites
50 minutes ago, emyliano2000 said:

Thanks. I could've probably done with a bit more data on it, being under bortle 7 skies, to be honest but I was so excited to see how it looks so far that I decided to stack and edit 😁

Emil

I get that. I almost always have a stack and process of a night's data to see how things have turned out. 

But I've ended up with loads of unfinished images and multiple stacks of data on the same object

Link to post
Share on other sites
33 minutes ago, wimvb said:

Nice!

Try to get 20 hours or more. Once the noise gets less, all kind of redshifted galaxies pop up, many of which aren't catalogued. The great dipper is a real treasure trove for distant galaxies, and not having a long fl actually helps, because it allows wider vistas.

Btw, what is your source for the galaxy data? Be aware that redshift for quasars for some reason isn't the same as for galaxies; it overestimates their distance.

Thanks, I'll try to add more to it and see what else pops out :)

I didn't actually calculated it myself, I found it on this website https://astrovirusblog.wordpress.com/2020/05/17/m106-quasars-and-cosmological-distances/?fbclid=IwAR2_zqXun40oGqzGSfIq6WAYHrLJO2UdBd5VefqWLa_8Sj88K37JUDFBQOMhash=59fa4c9a54d59330b10735ae0c945b05#comment-699hash=59fa4c9a54d59330b10735ae0c945b05#comment-699

It was showing 15bly under the photo, I messaged the owner and it looks like he rectified it to 12 bly. It's saying that it has a 1.13 redshift.

Where do you get your data from, I would love to know.

Emil

Link to post
Share on other sites

Thank you guys. I think I'll keep adding to it until I get close to around 20 hours. I try to shoot the luminance when the target is at its highest and the streetlights are turned off but I think a good light pollution filter would help a bit more. Maybe some 300sec on the RGB too. 

Emil

Link to post
Share on other sites
  • 4 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.