M42, the Great Nebula (Dec. 15, 2014)

Ah, the dark art of imaging M42.  What can one say?

Telescope: Astro-Tech AT111EDT (f/7) and Astro-Tech AT2FF
Camera and Exposure: SXVF-H9C, 20x30", 20x60", and 29x300"; Alnitak Flat-man flats
Filter(s): Astronomik CLS
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, PHD, Maxim DL, Registar, Photoshop CS3
Location: The Woodlands, TX

IC 1795 (Nov. 2014)

This area is up early in the evening now and sets for me behind the trees around 1 am.  This set of frames included one night of excellent seeing and one that was very poor.

Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9, Ha 21x1200" (6nm), Alnitak Flat-man flats
Filter(s): Astronomik Ha
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, PHD, Maxim DL, Photoshop CS3
Location: The Woodlands, TX

IC 410 and NGC 1893 (Fall 2014)

Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9 (Ha- 14x1200" (6nm) and 7x900" (12nm), SII- 22x900", OIII- 31x900" (total 19 hours 40 minutes)), Alnitak Flat-man flats
Filter(s): Astronomik NB Filters
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, PHD, Maxim DL, Registar, Photoshop CS3 (and one Carboni action)
Location: The Woodlands, TX

M33 (October 2014)

This galaxy in Triangulum is a near neighbor, just around 2.8 million light years away.  It's so close it fills the view!  M33 is smaller than our own galaxy but contains numerous regions of gas and dust in which stars are forming.

M33 is just bright enough to be seen with mere eyes from a moonless sky away from all lights.  I've seen it from the SHSU Observatory.  The background sky in this image is bright (and contrast relatively low) because all of my data was gathered from my backyard (community of 100,000 just south of a city of 100,000 (including suburbs)).

This image combines monochrome full-spectrum sub-frames with color sub-frames I took in 2012.  I was glad to see the two data sets come together so well.  The combined mono and color frames were matched in Registar then combined in Photoshop.

Luminosity:

Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9 39x300", Alnitak Flat-man flats
Filter: Astronomik CLS
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX

Color:

Telescope: SV80ED (and William Optics 0.8x II fr/ff (eff. at f/5.6))
Camera and Exposure: SXVF-H9C (49x480"), Alnitak Flat-man flats
Filter: Hutech IDAS-LPS2
Guiding: Meade DSI Pro and Hutech 50mm
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX

NGC 891 (Oct. 2014)

This galaxy flies about 32 million light years away in the constellation Andromeda.

I've always imagined that our galaxy would look something like this edge-on.  The Milky Way is similarly ringed with massive clouds of gas and dust.

Telescope: Astro-Tech AT111EDT (at f/7) and Astro-Tech AT2FF
Camera and Exposure: SXVF-H9 85x360", Alnitak Flat-man flats
Filter: Astronomik CLS
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX

IC 410 in Ha (October 15, 2014)

Lying in the plane of the Milky Way, in the constellation Auriga, nebula IC 410 provided raw material for the star cluster (NGC 1893) in the center of this frame.  The light of the cluster's stars now makes the remaining gas glow.

Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9 14x1200", Alnitak Flat-man flats
Filter: Astronomik 6nm Ha
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Photoshop CS3
Location: The Woodlands, TX

Initial Spectra, Vega and Mu Cephei (October 4, 2014)

[Click on picture for larger view.]

I acquired a Star Analyzer 100 grating to try spectroscopy.  Here are my first results.  These are just raw data from the camera; I have not calibrated for instrument response.  But you can see the hydrogen Balmer absorption lines are visible in Vega, an A-type star.  Furthermore, the blue end of the spectrum is lit up.  

Mu Cephei, a type M2 Ia star (probably, but classed as M1 or other kind of M2, also), is known for its red color, and the spectrum bears that out.  Titanium oxide lines dominate.  These stars are very different, and the difference is obvious in their low-resolution spectra.  Rather than identify lines in the spectrum of Mu Cephei, I have displayed a reference spectrum for a type M2 I star, which Mu Cephei is.  My little camera is obviously catching the major features.  That's pretty exciting to see.

The brightness of the bar at 0 means nothing.  Vega is dimmer only because of an accident of processing.

Telescope: Astro-Tech AT111EDT (at f/7)
Camera and Exposure: SXVF-H9
Filter: Star Analyzer 100 grating
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, RSpec, Photoshop CS3
Location: The Woodlands, TX