My best PILARS

[diegocolonnello]

When the seeing helps


249565

Imaging telescope or lens:Sidereal Trading ST/250 Carbon Newt

Imaging camera:ZWO ASI1600MM-PRO

Guiding telescope or lens:Sidereal Trading ST/250 Carbon Newt

Guiding camera:QHY5L-II

Software:Starkeeper.it VOYAGER

Accessories:Roll off Obsy Canon Payne Observatory, QHYCCD Polemaster

Resolution: 2185x1612

Dates:Sept. 17, 2019

Frames: 40x120"

Integration: 1.3 hours

Avg. Moon age: 17.75 days

Avg. Moon phase: 90.23%

Astrometry.net job: 2924320

Data source: Backyard

[Nikolas]

Diego the detail in this image is outstanding. HA involved or is this just luminance?

[diegocolonnello]

It is Ha only...

[muletopia]

Hello,
The details of the nebulosity are indeed appealing.
I have a question from a beginners perspective. In my Canon capture of this object the details of the nebulosity are nowhere near extensive as yours but in the right hand pillar I find three prominent starts and in the small dark patch to the right of that pillar a single star.


Is the lack of these stars in your image due to the capture in HA or your processing?


Chris

[LewisM]

Cor blimey! Not 'arf bad!

(said in my worse impersonation of a Cockney)

[codemonkey]

I'm continually amazed by what you can get out of your gear with such little integration time. Amazing, Diego.

[dave_galera]

Nice image with brilliant detail and contrast

[Paul Haese]

Great detail in the core Diego. Certainly quite sharp.

[muletopia]

Diego,
To illustrate the basis of my question I attach my poor image with the starts in the right hand pillar and associated dark area.
Granted you reputation on processing I guess that the lack of these stars in your image is due to the HA capture. Is this the case?


Chris

[JA]

Whilst not addressed to me, I suspect so. There is some evidence of this in the following Hubble Narrowband Vs InfraRed image of The Eagle attached. Of course there may also be some star shrinking involved in the processing stage.

Best
JA

[Paul Haese]

My multi filter image (http://paulhaese.net/M16.html) of this area a few years back barely shows those stars. The NB data has suppressed those stars. The only reason why I can see the stars is because I used RGB stars over the top of the NB data. A Ha frame on its own would well suppress some of the less bright stars in certain parts of the field.

[muletopia]

Thank you Paul and JA.


You have answered y question nicely. A lesson for a novice to take on board.


Chris