astrophotography – Orion mount, guided (october)

Still good weather in Seattle for the first weeks of October…

And finally I got an adapter to mount a second scope (a 80 mm Meade DS2080 OTA) to the mount (near my main OTA – Celestron 6SE).. This configuration allows me to get guided shots.

Basically, I use a Meade DSI II Pro to guide through the Meade refractor, PHD freeware for guiding and Canon’s EOS Utility for remote shooting.

Here are some of the additional pictures I took during the last 2 weeks:

Andromeda Galaxy - M31
Andromeda Galaxy - M31

Andromeda again – but, probably the best picture of that galaxy realized by me so far…

Crab Nebula - M1
Crab Nebula - M1

Crab Nebula – a supernova remant. It’s a cloud of dust resulted from the supernova explosion of a star 6500 light years away from our solar system. That supernova was seen from Earth during 1054 A.D. (the year of Great Schism which divided the Christianity into Catholic and Orthodox churches). The explosion was bright enough to be seen from Earth even during day time and, at a apparent magnitude of up to -7 was the brightest object in the sky (except the Moon and the Sun).

Triangulum Galaxy - M33
Triangulum Galaxy - M33

M33 – Triangulum Galaxy – yet another picture of M33, and probably a better one compared to what I got in the past. It  has a bluish cast – and probably a side effect of the picture processing. I may try to get better pictures of this target in the future – but I think it still looks pretty good like that.

Iris Nebula - NGC7023
Iris Nebula - NGC7023

Iris Nebula – NGC7023 – a target which I was unable to “see” through my telescope but it looks quite nice in the picture. A few clouds of gas lighted by a nearby star.

Pleiades - M45
Pleiades - M45

A section of Pleiades – M45 “The Seven Sisters” – an open cluster in Taurus constellation close to Earth (440 light years from us). It’s a place where new stars are born and it exhibits a faint blue reflection nebulosity.

Flaming Star Nebula - IC405
Flaming Star Nebula - IC405

Flaming Star Nebula – IC405 – an emission/reflection nebula in Auriga constellation, 1500 light years away.

M35 Open Cluster
M35 Open Cluster

M35 – open cluster in Gemini. There is a seconday open cluster in the right bottom corner of the picture.

Pacman Nebula - NGC281
Pacman Nebula - NGC281

Pacman Nebula – NGC281 in constellation Cassiopeia, 9500 light years away.

All these pictures are the result of stacking various exposures. For example, for nebulae I get aprox 10-20 shots of 3 minutes exposure each at ISO1600 or ISO3200 (depending on the position of the  target in the sky, sky glow, seeing and transparency conditions, etc) – stack them with DSS and get some additional processing (curves and levels settings) in Photoshop.

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One Comment Add yours

  1. design says:

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