NGC 5426 and NGC 5427 (Arp 217). KG Observatory, Julian, CA.
ESO selected this galaxy pair as their final image captured on their Very Large Telescope (VLT) before decommissioning their VIMOS instrument in 2018...
I was curious to see what's possible if the telescope is fairly large, but not VERY Large. (-:
This galaxy pair is fairly small in my FOV, so I processed with 2X drizzle for maximum resolution. Current 21.5+ SQM skies with 1.8" average FWHM on 15 minute subs also helped a bit. (-;
A Portrait of the Lady in the IC 1396, or the Elephant Trunk.
Imaged in Linz, Austria from a school observatory in May 2020. Processed as custom SHO.
203mm APO, Full Frame SBIG CCD, 13 hours of integration time.
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Several folks requested I update my prior FOV to possibly capture more tidal streams. 21.5+ SQM overhead skies, but closer to 21.2 SQM where I was pointing.
I used a Celestron EDGE 8 HD at 2032 mm f10, which allowed me to capture 4.2 hours of exposure time (126 / two minute shots). I used a Celestron CGEM mount, and a ZWO ASI 071 color camera.
Guiding a 2032 mm isn`t an easy task so I used a Celestron OAG coupled with a ZWO ASI 174 MC guiding camera. As I am shooting this target in the middle of a bortle 9 city, I used a light pollution filter (IDAS LPS-D1) to minimize light pollution problems.
I also got the Homunculus nebula, which requiered lower exposure times. I did 74 (five second shots / gain 0), and another set of 40 (thirty second shots / unity gain) for the outer layers of the homunculus nebula.
I finally merged all exposures in one single image.
Emil Ivanov's image shows the striking brightness of M61 compared with the faintness of its satellite galaxies, NGC 4292 (upper right) and NGC 4301 (upper left).
NGC 4301 is an interesting galaxy that has rarely been photographed. There exists an SDSS photo of it that shows the galaxy to be a relatively low-mass dwarf with a rather faint yellow bulge and a somewhat rudimentary spiral structure. The galaxy hosts up to ten bright knots of star formation.
NGC 4292 contains no star formation at all, but it does display some ring or shell structures in this image by Alson Wong. Also check out the brilliance of the regions of star formation in NGC 4301 in Alson Wong's image.
Ann
Re: Submissions: 2020 May
Posted: Wed May 27, 2020 6:23 pm
by John2y92
SH2-27 an area that is not imaged very often probably because of the Rho Ophiuchi nearby.
This image was taken at my cottage and it is 230x60s using Canon 6D, Samyang 135mm @f2.4 and ISO800
Re: Submissions: 2020 May
Posted: Thu May 28, 2020 12:45 am
by KuriousGeorge
With lots of luminance acquired during my Sombrero Galaxy (Deep) project looking for tidal streams...
A composition made of 52 north latitude when there was no astronomical night. Sun was just 17 degrees below the northern horizon.This allowed to show two phenomena: the passage between day and night and the northern part of the sky with the SWAN comet. The composition was made up of 84 vertical shots. The total exposure time is 84 minutes. Canon 6D, Samyang 135mm f2.
The supernova SN 2020jfo was discovered by The Zwicky Transient Facility (ZTF; Bellm et al. 2019; Graham et al. 2019) in a weakly-barred spiral galaxy NGC 4303 (M61) on 6-th of May 2020. ZTF reported a rapidly rising young supernova in the nearby galaxy M61. Assuming the redshift of the host (M61, z=0.005224 from NED), and the distance of ~19 Mpc the SN was discovered around absolute ZTF r-band magnitude of Mr = -15.8. The follow up rapid spectroscopy reveals a blue continuum that suggests a core-collapse supernova origin and was classified as a young Type II supernova. Total amount of eight supernovae was discovered in NGC 4303 since the first one in 1926 followed by SN in 1961, 1964, 1999, 2006, 2008, 2014 and 2020.
Hi Everyone, good morning, I would like to share with you this image of NGC 5128 - Centaurus A Galaxy (LRGB) from skies bortle 9
10.5 h of total integration, from Córdoba, Argentina
Main Equipment: ZWO ASI 1600 mm-pro + SW Explorer 250pds + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW
Guiding equipment: guidescope 60/240 mm, ZWO ASI 120mm mini
EXIF: Nikon D810 + Nikon 180mm f/2.8 ED.
Sky: 180mm. f/3.5. ISO 800. 26x3 min. shots + 2x30 sec, 2x15", 2x8", 2x4", 2x2", 2x1" for M42 core. Tracked
Foreground: 180mm. f/5. ISO 100. 20 sec. Blue hour.
No repositioning or reframing was performed between the sky and the foreground shots. Only the tracking mount was turned off for the foreground.
The giant galaxy NGC 5084 in Southern Virgo
Posted: Sat May 30, 2020 11:39 am
by strongmanmike
This beautiful lenticular galaxy in southern Virgo, is one of largest and most massive galaxies in the Virgo Super cluster of galaxies. We view it almost perfectly edge on, so while it appears only about one arc min in thickness, in this very deep image, NGC 5084 spans almost 17 arc min of the sky, which, at an estimated distance of 80 Million light years, means it is nearly 400,000 light years in diameter, which in anyone's book, is one seeeriously gigantic galaxy!
Large version here: https://pbase.com/strongmanmike2002/ima ... 9/original
Hi Everyone, good morning, I would like to share with you this image of M83 - Southern Pinwheel Galaxy (LRGB) from skies bortle 9
11 h of total integration, from Córdoba, Argentina
Main Equipment: ZWO ASI 1600 mm-pro + SW Explorer 250pds + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW
Guiding equipment: guidescope 60/240 mm, ZWO ASI 120mm mini
