Treasures of the Southern Sky by Robert Gendler, Lars Lindberg Christensen and David Malin (Published by Springer)
Given that it’s been almost 25 years since the publication of “Exploring the Southern Sky” and almost 20 years since David Malin’s “A view of the Universe”, a new coffee table book featuring the southern sky is probably long overdue. There have been many advances in imaging techniques in the last 25 years and quite a few new telescopes, including HST, which often image southern objects. Continue reading BOOK REVIEW: Treasures of the Southern Sky→
There’s been a lot of chatter in the news about Europa and the possibility of life. Europa has been the astrobiology darling for a few years – but I think that Enceladus is now the forerunner, and it’s where we should be looking next. Why you ask? Well here’s a few reasons:
Enceladus has range of terrains from old, heavily cratered surfaces, tectonic features including scarps, troughs, grooves, ridges, and a young surface and evidence of recent tectonic activity in the southern hemisphere, less than 10 – 100 my. Plate movement is an indication of an active geology. The plume of water ice and other materials erupting to a height of >80 km from the surface of the moon at temperatures of order 70 K to 150 K provides strong evidence that Enceladus’ interior may be warm, contain a sub surface ocean and that its surface is presently tectonically active.
It has been a while since capturing data for a new image (~6months), but here it is, The Trifid Nebula (NGC6514).
Camera: SBIG STT-8300M
Composition: LRGB (152:45:40:40) bin L 1×1, RGB 2×2
Captured: 25, 27, and 29 September 2013 – Canberra
Astronomy.net says the following about the photo:
Your results are:
(RA, Dec) center: (270.625564674, -22.996920876) degrees
Orientation: 1.19352109615 deg E of N
Pixel scale: 2.10083867783 arcsec/pixel
Your field contains:NGC 6531NGC 6514
While delving around the SMC I couldn’t resist doing a shot of 47 Tucanae which I haven’t imaged for several years. This is 45 minutes exposure for each of L,R,G and B with the RGB added into L for synthetic luminance.
Catalogue and alternative designations NGC 104, 47 Tucanae
Type Globular Cluster
Position 00 24.1, -72 05
Camera and Telescope STXL11002 and 36.8 cm Ritchey Chretien
Focal Ratio F9
Exposure Details LRGB 90:45:45:45 All 1×1. Synthetic luminance used.
47 Tucanae is the second brightest globular cluster in the sky but has a much stronger central condensation than Omega Centauri. It is adjacent to the Small Magellanic Cloud and a very easy naked eye object.