Astrophotography by Anthony Ayiomamitis

Lunar Image Gallery - Mare Orientale

Mare Orientale is a formation lying at 95 W longitude and as a result is normally not visible to observers from Earth. However, due to libration, one may catch a glimpse of this 300-km circular formation during three-day windows of opportunity late each year. As indicated by Lunar Orbiter satellite photos, this mare is characterized by a set of impact rings on the periphery whose presence is noted in the image below following careful inspection. For an interesting discussion on the controversy and/or confusion as to who was the first ground-based observer to discover this mare, click here.


Image Details
Mare Orientale - Eastern Sea
Imaging Details
Body:
Moon

Mass:
0.0123 x Earth

Mean Eq Diameter:
0.2719 x Earth

Distance:
391,278 km

Sidereal Rev:
27d 07h 43m 11s

Age:
24d 08h 05m

Phase:
116.5

Diameter:
30.95'

Magnitude:
-9.0

Rukl:
50
Date:
Sep 21, 2003
06:36:39 UT+3


Location:
Athens, Greece

Equipment:
Celestron 14" SCT
Losmandy G-11 GEM
Nikon Coolpix 995
ScopeTronix STWA14 Adapter


Exposures:
1 x 1/15 sec @ f5.1
ISO 200
JPG RGB Fine image format
2048x1536 image size
Autodark subtraction


Software:
Photoshop V6

Processing:
Unsharp Masking
Grayscale
Levels
Brightness/Contrast
Resampling (30%)
JPG Compression


Copyright 2001-2005, Anthony Ayiomamitis. All rights reserved.