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Taken with a Skywatcher 130p and a Philips webcam. 370 frames at 5 f/s. Processed in Registax 6. Seeing was not good for this image as it was very boily and unsteady.
This is a famous "optical feature" on the Moon, which appears like the letter "X" when the terminator is at a suitable position. It is a fine example of how the combination of lighting and topography can combine to produce a pattern that repeats on each lunation, but only for a short time. The illusion of the "X" is created by sunlight falling on the rims/ridges between the craters La Caille, Blanchinus, and Purbach.
The "X" is observable for about 4 hours around the lunar First Quarter.
Skywatcher 72ED with field flattener and Canon 1100D with UHC filter piggybacked to main scope on CEM60. Fifteen subs at 120sec each (ISO 800) stacked in DSS and processed in PS CS2.
Darks and flats subtracted.
Shotdate: Morning 21st July 2013
Location: N52.2376,E6.0507
Camera: Nikon D3x
Filter: None
Optics: Celestron 9,25" EdgeHD
Guiding: LVI SmartGuider 2
Mount: Skywatcher NEQ5 Pro
Exposure: 12 x 600 seconds
ISO-speed: 800
WB: Sunshine
Comments: Shot two days before full moon and with just over 2 hours of complete "Astro" darkness, not bad. The individual images have a quite severe haze over them.
Stacked in PixInsight using 12 lights, 20 flats, 120 bias and 20 darks.
Processing steps after stacking:
DynamicCrop: Processing view: light_BINNING_1
Script PreviewAggregator
ColorCalibration: Processing view: light_BINNING_1
HistogramTransformation: Processing view: light_BINNING_1
BackgroundNeutralization: Processing view: light_BINNING_1
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Four times:
ChannelExtraction: Processing view: light_BINNING_1
ATrousWaveletTransform: Processing view: light_BINNING_1_L
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DynamicBackgroundExtraction: Processing view: light_BINNING_1
ImageIdentifier: Processing view: light_BINNING_1_DBE
id = org
Four times:
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ATrousWaveletTransform: Processing view: org_L
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DynamicBackgroundExtraction: Processing view: org
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ATrousWaveletTransform: Processing view: org_DBE_L
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LocalHistogramEqualization: Processing view: org_DBE
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Skywatcher Esprit100ED
Omegon veTEC571c Color
Optolong L-Ultimate
ZWO OAG + ASI290mm Mini
Ioptron CEM70
61*900s G100 T-5°/-10°
15h15m Total Integration Time
Bortle 6/7 Sky
Skywatcher 150PDS
ZWO ASI 2600MC Camera (Cooled to -10c 7 x 600 Sec Subs)
Optolong L Extreme Filter
ASIAIR Pro
ASIAIR EAF
ZWO 120mm Guide Scope
HEQ6-R Pro Mount
I finally cleaned and greased my Star Adventurer for the first time, after owning it for two years...
Skywatcher DOB GOTO 12'
Ackermann 2in coma corrector/ reducer 0.73
ZWO ASI294MC PRO gain390 ZWO UV-IR Filter
200 × 10sec
Sky-Watcher Evostar 72ED + Quark Chromosphere + ZWO ASI174MM. Stacked in AS!3, sharpened in ImPPG and post-processed in RawTherapee
Skywatcher 150/1200, DMK51, Barlow 2x, additions de 250 images + de détails www.astrobin.com/70640/B/
Sol Región Activa 2740 - Barlow Powermate 2'5X
Telescopio: Skywatcher Refractor AP 120/900 f7.5 EvoStar ED
Cámara: ZWO ASI178MM
Montura: EQ5 Bresser EXOS2 motorizada sin goto
Filtros: - Baader Neutral Density Filter 1¼" (ND 0.6, T=25%)
- Baader Solar Continuum Filter 1¼" (540nm)
Accesorios: - Baader 2" Cool-Ceramic Safety Herschel Prism
- TeleVue Lente de Barlow 2,5x Powermate 1,25"
Software: SharpCap, Pipp, AutoStakkert, Registax y Photoshop
Fecha: 2019-05-10
Hora: 17:05 T.U.
Lugar: 42.615 N -6.417 W (Bembibre Spain)
Vídeo: 2 minutos
Resolución: 1024 x 768
Gain: 100
Exposure: 0,000049
Frames: 13179
Frames apilados: 8%
FPS: 109.797
This is an improved capture and post processing of the M27 Dummbell nebula I posted a week ago which I thought was quite horrible but I wanted to quickly put it up fo Star Wars week and call it a Tie Fighter Flyby Spotted from Peckham :)
Yesterday I posted up the M57 Ring Nebula, a a planetary Nebula viewed top down. This is another planetary nebula viewed "side on". We're lucky in London to see the brightest planetary nebulas have such contrasting perspectives.
So a planetary nebula are remnant materials shed from a star that came to the end of its main phase of life. In much much larger telescopes, we would see a white dwarf in the centre.
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Capture details
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Location: Peckham, London, Living Room window!
Telescope: 80mm Equinox APO refractor with a field flattener
Mount: Nexstar 6/8SE Alt Az on a sturdy table.
Camera: Canon 650D unmodded
No filters used
Light frames
557 X 5 Sec ( 48 mins)
ISO 1600
32 Dark Frames
Stacked with DSS (Deep Sky Stacker). Manually adjusted RGB levels, luminosity and saturation to get as visually appealing image with colour stars before importing into imaging software.
Camera Raw: slightly cropped, adjusted black, and curves
Photoshop. Violently, clipped dark side information to eliminate colour noise . gradually adjusted levels multiple times to eliminate light pollution, curves to bring out more detail.