StDr 11
With a diameter of (only) 1.4 arc minutes, Strottner Drechsler 11 is not one of the giants among planetary nebulae and the PN is also anything but sparkling in terms of surface brightness, as it took almost 100 hours of exposure time to image this shy jewel in the constellation Cygnus. Strottner Drechsler 11 was confirmed as a true planetary nebula by the Frenchman Lionel Mulato in 2020 through a spectrum. The structure of the nebula can be described as classic, so StDr 11 consists of a thin H-alpha layer with a bubble of [OIII] in the centre. The central star of the PN is so faint that it can only be recognized from high-resolution survey images.
Spectrum courtesy of Lionel Mulato.
TARGET
Nomenclature: StDr 11
Right Ascension: 20:20:53.30
Declination: +29:49:51.1
Discovery: Xavier Strottner and Marcel Drechsler
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
Nomenclature: StDr 11
Right Ascension: 20:20:53.30
Declination: +29:49:51.1
Discovery: Xavier Strottner and Marcel Drechsler
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
Ha 5nm: 191x900" bin 1x1
OIII 3nm: 176x900" bin 1x1
Red: 38x300" bin 1x1
Green: 19x300" bin 1x1
Blue: 18x300" bin 1x1
Total integration: 98 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.356 degrees
Capture dates: 16 April - 22 June 2023
Capture location: Fregenal de la Sierra, Spain
Ha 5nm: 191x900" bin 1x1
OIII 3nm: 176x900" bin 1x1
Red: 38x300" bin 1x1
Green: 19x300" bin 1x1
Blue: 18x300" bin 1x1
Total integration: 98 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.356 degrees
Capture dates: 16 April - 22 June 2023
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Pixinsight, Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Pixinsight, Photoshop CS2