IC 1805

IC1805 - The heart nebula in Cassiopeia


Vixen AX103S F/8 refractor w/ 0.7x focal reducer 825 to 578mm (f/5.6); SBIG ST-8300C (1x1 bin, 1200s x 3); Takahashi EM-11 Temma 2M; CCDSoft, MaxIm DL5 and Photoshop CS4, Toledo, OH, Oct 24, 2011

M31 - Andromeda Galaxy

M31 (NGC 224) - The Andromeda Galaxy w/ satellite galaxies M110 (left) and M32 (right) in Andromeda


Vixen AX103S F/8 refractor w/ 0.7x focal reducer 825 to 578mm (f/5.6); SBIG ST-8300C (1x1 bin, 1200s x 4); Takahashi EM-11 Temma 2M; CCDSoft, MaxIm DL5 and Photoshop CS4, Toledo, OH, Oct 24, 2011

Vixen AX103S

 

This is Vixen AX-103S (f/5.6 with x0.7 focal reducer), 4-inch apochromatic refractor from Vixen. Unlike an achromatic refractor, whose objective consists of two optical elements, it has a three-element objective. The central lens boasts extra-low dispersion (ED) glass designed to reduce chromatic aberration (colors focusing at different points) and improve image contrast. Also, a fourth optical component in included as a field corrector lens positioned toward the rear of the tube.

M1 - The Crab Nebula

M1-The Crab Nebula in the constellation of Taurus

TEC 140 F/7 refractor, AP CCD Telecompressor 0.67x, SBIG ST-8XME with CFW-8 (L= 5x60/binning 1x1, R=5x60, G=5x60, B=5x60/binning 2x2), Losmandy G-11 Gemini v4, MaxIm DL5 and Photoshop CS4, Toledo, OH, Nov 28, 2010

M27 - Dumbell Nebula

M27-The Dumbell Nebula in the constellation Vulpecula


TEC 140 F/7 refractor AP CCD Telecompressor 0.67x SBIG ST-8XME with CFW-8 (L= 5x60/binning 1x1, R=5x60, G=5x60, B=5x60/binning 2x2) Losmandy G-11 Gemini v4 MaxIm DL5 and Photoshop CS4, Toledo, OH, Nov 28, 2010

IC434 - Horsehead Nebula

NGC 2024 and IC 434 -The Flame Nebula (left) and Horsehead Nebula (right) in the constellation Orion


TEC 140 F/7 refractor AP CCD Telecompressor 0.67x SBIG ST-8XME with CFW-8 (L= 5x60/binning 1x1, R=5x60, G=5x60, B=5x60/binning 2x2) Losmandy G-11 Gemini v4 MaxIm DL5 and Photoshop CS4, Toledo, OH, Nov 28, 2010

M72 - The Aquarius Globular Cluster

M72 - The Aquarius Globular Cluster

A globular cluster is a spherical collection of stars that orbits a galactic core. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities. M72 is one of well known globular clusters in the constellation Aquarius. It has an apparent visual magnitude of 9.3 and its angular diameter is 5.9 arc-minutes. The image was obtained on 16 November 2010 using a TEC140 f/7 refractor and a SBIG ST-8XE CCD camera with a luminance filter. The total exposure time was 15 minutes, 3-minute subexposures.

M13 - The Hercules Globular Cluster

M13 (NGC 6205)-The Hercules Globular Cluster

TEC 140 F/7 refractor, WO x0.8 reducer/flattener II, SBIG ST-8XME with CFW-8 (RGB=60:60:60), Losmandy G-11 Gemini4, CCDops, MaxIm DL5 and Photoshop CS4, Toledo, OH, Nov 8, 2010

M57 - Ring Nebula

Cropped image

M57-The Ring Nebula

TEC 140 F/7 refractor WO x0.8 reducer/flattener II SBIG ST-8XME with CFW-8 (RGB=60:60:60) Losmandy G-11 Gemini CCDops, MaxIm DL5 and Photoshop CS4, Toledo, OH, Nov 1, 2010

Celestron C11

This is C11 made by Celestron, which is my first Schmidt-Cassegrain. It was coupled with Losmandy G11 can be seen in the picture (Left black tube). Now, it is operated with Vixen SXD since G11 was sold. I think G11 performed much better than SXD regarding handling C11. But, it doesn't mean that SXD can't be used for C11. As of now, C11 has been used for a visual observation. Well, I might be able to do astroimaging with a stock condition. But, it would be difficult to image deep sky objects with a long focal ratio (f/10). I would rather do astrophotography with Takahashi e180, f/2.8 or Vixen AX-103S, f/5.6 with x0.7 reducer.