Fr 2-41
Fr 2-41 was discovered by professional astronomer Dr David Frew. Until this image was produced it was registered on the HASH database as a possible planetary nebula. This deep, contrast-enhanced image is the first image of Fr 2-41. It reveals an interesting structure that is atypical of the classical structure of planetary nebulae. More than 9 hours of [OIII] exposures have yielded no trace of [OIII] signal. Accordingly the Laboratory for Space Research, HKU has reviewed and reclassified Fr 2-41 as ionised interstellar medium.
TARGET
Nomenclature: Fr 2-41
Right Ascension: 19:17:25
Declination: +42:31:59.9
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
Celestron EdgeHD 14"
10Micron GM2000 HPS mount
ASA DDM85 mount
Twin QHYCCD QHY268 MM Pro cameras, QHY600 Pro M camera
Nomenclature: Fr 2-41
Right Ascension: 19:17:25
Declination: +42:31:59.9
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
Celestron EdgeHD 14"
10Micron GM2000 HPS mount
ASA DDM85 mount
Twin QHYCCD QHY268 MM Pro cameras, QHY600 Pro M camera
IMAGE CAPTURE
Ha 5nm: 289x300" bin 1x1
OIII 3nm: 112x300" bin 1x1
Red: 21x300" bin 1x1
Green: 20x300" bin 1x1
Blue: 20x300" bin 1x1
Total integration: 38 hours 30 minutes
Pixel scale: 0.648 arcsec/pixel
Field radius: 0.694 degrees
Capture dates: 2-18 April 2024
Capture location: Fregenal de la Sierra, Spain
Ha 5nm: 289x300" bin 1x1
OIII 3nm: 112x300" bin 1x1
Red: 21x300" bin 1x1
Green: 20x300" bin 1x1
Blue: 20x300" bin 1x1
Total integration: 38 hours 30 minutes
Pixel scale: 0.648 arcsec/pixel
Field radius: 0.694 degrees
Capture dates: 2-18 April 2024
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: Pixinsight, CCDStack2
Post-processing: Pixinsight, Photoshop CS2
Pre-processing: Pixinsight, CCDStack2
Post-processing: Pixinsight, Photoshop CS2