Astrophotography by Marcos Mataratzis & Vivek Hira

Telescopes, cameras and filters used by the authors to produce images at RAS Observatory
AREO 1 Takahashi Mewlon Dream Machine Aperture - 300mm 3572mm FL @ F/11.9 FOV: 23.6'x23.6' RES: 1.38 arcseconds/pixel Pixel size: 24 Microns Image size: 1024x1024 pixels	AREO 2 Takahashi Mewlon SBIG ST8E - NABG Aperture - 300mm 2730mm FL @ F/9.1 FOV: 11.5'x17.3' RES: 0.68 arcseconds/pixel Pixel size: 9 Microns Image size: 1530x1020 pixels	AREO 3 Takahashi Apocrhomatic Refractor Sky 90 SBIG ST10XME Aperture - 90mm 414mm FL @ F/4.6 FOV: 83'x123.2' RES: 3.38 arcseconds/pixel Pixel size: 6.8 Microns Image size: 2184x1472 pixels	AREO 4 Takahashi Epsilon SBIG ST8XE - NABG Aperture - 250mm 850mm FL @ F/3.8 FOV: 37.1'x55.6' RES: 2.18 arcseconds/pixel Pixel size: 9 Microns Image size: 1530x1020 pixels	AREO 5 Takahashi Epsilon SBIG ST8XE - ABG Aperture - 250mm 850mm FL @ F/3.8 FOV: 37.1'x55.6' RES: 2.18 arcseconds/pixel Pixel size: 9 Microns Image size: 1530x1020 pixels
		$Takahashi Refractor$

AREO 6 Intes Maksutov-Newtonian ST10XE - NABG Aperture - 150mm 900mm FL @ F/6 FOV: 37.7'x55.9' RES: 1.54 arcseconds/pixel Pixel size: 6.8 Microns Image size: 2184x1472 pixels	AREO 7 Custom made SBIG ST8XE - ABG Aperture - 381mm 1486mm FL @ F/3.9 FOV: 21.2'x31.8' RES: 1.25 arcseconds/pixel Pixel size: 9 Microns Image size: 1530x1020 pixels	AREO 8 RC Ritchey-Chretien Cassegrain STL-11000M - ABG Aperture - 311.mm 2846mm FL @ F/9.15 FOV: 29'x43.5' RES: 0.82 arcseconds/pixel Pixel size: 9 Microns Image size: 4008x2672 pixels	Takahashi Ritchey Chreitien (no longer available) Aperture - 300mm 2340mm FL @ F/7.8	Nikon (no longer available) Aperture - 107mm 300mm FL @ F/5.6


Narrow Band Filters
Narrow band Filter	Designation			Frequency
Red	R			612-670 nm
Green	G			488-574 nm
Blue	B			392-508 nm
Hydrogen-alpha	Ha			656.3 ± 5 nm
Hydrogen-beta	Hb			486.1 ± 5 nm
Oxygen III	O3			500.7 ± 5 nm
Sulphur II	S2			672.4 ± 5 nm

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