LTNF 1
LTNF 1 is an extremely faint and rarely-imaged highly-evolved planetary nebula in the constellation Ursa Major. It is a high-excitation nebula with an eclipsing binary star system (BE Ursae Majoris) at its centre which has resulted in its unusual morphology. It is around 5,000 light years from Earth. It is so transparent that galaxies can be seen through it. It was discovered by James Liebert, Richard Tweedy, Ralf Napiwotzki and Michael Fulbright in 1995. A joint project with Sven Eklund.

TARGET
Nomenclature: LTNF 1, PNG 144.8+65.8
Right Ascension: 11:57:44.84
Declination: +48:56:18.5
Size: 4 arc min
Discovery: James Liebert, Richard Tweedy, Ralf Napiwotzki and Michael Fulbright in 1995
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Celestron EdgeHD 14"
ZWO ASI16200MM Pro camera
10Micron GM3000 HPS mount
IMAGE CAPTURE
OIII: 68x1800" bin bin 1x1, 2x900" bin 1x1, 169x600" bin 2x2
Luminance: 18x300" bin 1x1
Red: 36x300" bin 1x1
Green: 36x300" bin 1x1
Blue: 41x300" bin 1x1
Total integration: 73 hours 25 minutes
Pixel scale: 0.531 arcsec/pixel
Field radius: 0.301 degrees
Capture dates: 12-26 January 2013
Capture location: Fregenal de la Sierra, Spain
OIII: 68x1800" bin bin 1x1, 2x900" bin 1x1, 169x600" bin 2x2
Luminance: 18x300" bin 1x1
Red: 36x300" bin 1x1
Green: 36x300" bin 1x1
Blue: 41x300" bin 1x1
Total integration: 73 hours 25 minutes
Pixel scale: 0.531 arcsec/pixel
Field radius: 0.301 degrees
Capture dates: 12-26 January 2013
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
CCDStack2, PixinSight, Photoshop CS2
CCDStack2, PixinSight, Photoshop CS2