Jump to content

Banner.jpg.b89429c566825f6ab32bcafbada449c9.jpg

Faint Star Just Outside M57


Recommended Posts

Evening everyone ,

Does anyone know the magnitude of the faint star just outside the Smoke Ring of M57 . Before the clouds rolled in tonight I was trying a new ES 8.8mm in the 200P and M57 looked really well at X 136 magnification , then the thought occurred to try it in the X 2 Barlow which gave a magnification of X 273 and , lo and behold , the Nebula was still clear but this time I could detect a faint star just outside it ( about 1 pm position ) 

Initially , the reason for trying this high magnification was to try and see the faint centre star but this was not possible tonight ... If I knew the magnitude of the peripheral star compared to the central star , then I`d know if it was possible to see the central star at all ( maybe in darker Winter skies ) 

Link to comment
Share on other sites

It's magnitude 13.

I was observing M57 earlier as well and posted in this thread here which might be of interest:

The central star is magnitude 15.3. I had no luck with that with my 12" dob tonight. Got within half a magnitude though.

Link to comment
Share on other sites

12 minutes ago, John said:

It's magnitude 13.

I was observing M57 earlier as well and posted in this thread here which might be of interest:

The central star is magnitude 15.3. I had no luck with that with my 12" dob tonight. Got within half a magnitude though.

Many thanks for the info and link , John ... I screen capped it for future reference ...

I`m pleased with the magnitude 13 result and it`s not far off the magnitude of the 15.3 central star ... might just be doable under dark , clear Winter skies ... 

Link to comment
Share on other sites

5 hours ago, Red Dwarfer said:

Many thanks for the info and link , John ... I screen capped it for future reference ...

I`m pleased with the magnitude 13 result and it`s not far off the magnitude of the 15.3 central star ... might just be doable under dark , clear Winter skies ... 

Nice catch :) 

Don't forget that the magnitude scale is logarithmic, each change in magnitude represents roughly x2.512 brighter or dimmer. The scale means a magnitude 1 star is 100 times brighter than a magnitude 6 star.

A mag 13 star is 8.3 times brighter than a mag 15.3 one, so it's actually pretty tough especially as it is set against the slightly higher surface brightness of the nebula.

Link to comment
Share on other sites

9 hours ago, Dave In Vermont said:

If the star you're referencing is the one mentioned. Is it?

 

597409c6eba71_Screenshot(257).thumb.png.8d07fdf15982dfce78ba7faacb9c58a3.png

TheSkyX Serious Edition

Enjoy!

Dave

Thanks , Dave ... flipped 180 that`s the one outside the nebula at 12.30 - 1 pm position . 

Link to comment
Share on other sites

6 hours ago, Stu said:

Set against the slightly higher surface brightness of the nebula

Yep , that guy John above couldn`t see it last night with a 12" Dob , so it will have to go down on the To Do List for further down the line ... it`s still great though to see those faint stars around the nebula , initially only with averted vision . 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • 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.