August 2018 – Crayford Manor House Astronomical Society Dartford

M45, The Pleiades

30th August 2018

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The Pleiades (M45) are an open star cluster in the constellation of Taurus. It is among the nearest star clusters. It is the cluster most obvious to the naked eye in the night sky. Pleiades has several meanings in different cultures and traditions.
The cluster is dominated by hot blue stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternate name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium that the stars are currently passing through. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighbourhood.

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Images by Simon Dawes

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Imaged by Simon Dawes.
William Optics ED80, Canon 650D, 105m integration

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Images by Honor Wheeler

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Images by Neil Webster

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[caption id="" align="aligncenter" width="800"] Image by Neil Webster - no Details Provided[/caption]

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Image by Brian Thompson

Date: 18/02/2015
Equipment: Orion Optics VX10 scope, Skywatcher NEQ6 mount, Mono Atik 383L camera, QHY5 Guide Camera.
Frames:13 X 120s lights, no darks.
Processing: Stacked and processed in Astro Art.

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Imaged by: Andrew Wilson
Method: MX916 CCD with 35mm lens, 10 x 5 seconds

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Imaged by Keith Rickard
Method: Olympus OM1n 210mm telephoto lens, piggy-backed on LX200 8", Kodak Elitechrome ISO 200 film, 20 minutes. (Published in Astronomy Now!)

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Imaged by Martin Crow at Kelling Heath Star Party 2012

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Imaged by Julian Tworek
Instrument: AstroTrac Canon 100-400 lens @ 200mm ISO1600 13 x 120s Images Canon 20D (Modified)
Details: Taken at Kelling heath Star Party

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2019 Calendar

29th August 2018

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Some of you who were present at the Pavilion on the 29th of March will be aware of the following changes to the Society’s Calendar rules. Each month will now consist of a collage of member’s images rather than just one per month.

The Calendar size will also increase from 21 x 28cm to 28 x 37cm picture size to accommodate the collage of images, I am unsure how many images can be accommodated per page but it may be between 6 to 8, actual numbers TBA. Price TBA.

Rather than the list of 4 groups such as the Moon, Sun, Deepsky etc. there will be a list of 'Targets' for member’s to photograph or sketch.

Important: Image/s to be submitted for the 2019 Calendar must have been photographed or sketched after the 1st of January 2012 but no later than 8pm (GMT) on the 3rd of October 2018.

(All images for the 2020 Calendar will need to been photographed or sketched AFTER the 3rd of October 2018 but before the 2nd of October 2019 so keep this in mind when submitting your images).

DON’T FORGET TO READ THE RULES!

PLEASE DO YOUR BEST TO TAKE PART, THANKS.

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Target images for the 2019 CMHASD Calendar are as follows:

1. Earthshine

The Moon’s shadow side can often be seen when the young crescent Moon is visible. Images must show the Moon with the shadowed side also visible

2. A Rainbow

Images can be an Arc or a portion of the Rainbow.

3. The Planets

Images can be of any of the Planets (not the Earth that would be cheating ;)

4. Lunar and/or Planetary Conjunctions

Images can be of the Moon in conjunction with Planet/s or a planetary line-up of 2 or more Planets.

5. The Orion constellation

Images that show the Orion constellation in full as the left image or as the image on the right with the four stars Betelgeuse, Bellatrix, Saiph and Rigel at each corner.

6. Lunar Eclipse

A Lunar eclipse will hopefully be visible on the 27th of July but any images photographed or sketched after the 1st of January 2012 can be submitted. The Moon partially or fully eclipsed will be acceptable.

7. Atmospheric Optics

Images of any of the following: Solar Halo, Sundogs, Circumzenithal Arc, Cloud Iridescence and Crepuscular Rays etc.

8. The Andromeda Galaxy

A close-up image of this wonderful Galaxy.

9. Sunset or Sunrise

Any photograph or sketch of a Sunrise or Sunset over land or water.

10. Lunar crater Copernicus

A close up of the crater Copernicus photographed or sketched using a Telescope or a Telephoto lens.

11. Sunspots

Images of Sunspots in White Light or a projected image only, not H-alpha (as only a few members have H-alpha telescopes).

12. Ursa Major constellation

Images of the whole constellation or the Plough will be acceptable.

13. A Full Moon

The Moon must be between 98 – 100% to qualify for this Target, you’ll need to make sure as I will check the date and the image was photographed or sketched.

14. The Pleiades and/or the Hyades

An image of either the Pleiades or the Hyades or an image of them together.

I am aware there are 14 Targets, not everyone will be able to image all of the Targets so hopefully this way everyone will be in with a sporting chance of obtaining at least one image for the Calendar.

Rules: And please make sure you read them!

You may only enter one image per category.
Sketched, Single, Multiple Stacked or Mosaicked images are acceptable, Composite images are NOT acceptable.
All images entered must have been Photographed or Sketched by the person entering the image/s.
If too many images (maximum numbers TBA) are entered for one ‘Target’ then a vote will be taken on each image and the images with the most votes will be included in the Calendar.
All images MUST have been taken AFTER the 1st of January 2012 but before 8pm (GMT) on the 3rd of October 2018.
The two ‘Targets’ with the least number of images received will not be included in the Calendar.
Images can be taken using another member’s telescope but the camera used MUST belong to the member submitting the image/s.
Poor quality images will have to be omitted so make sure the image resolution is good enough for printing.
All images MUST be submitted to this email address: honor . draconis @ talk21 .com (remove spaces) BEFORE 8pm (GMT) on the 3th of October 2018, no exceptions.

When emailing your images please use the email subject heading ‘CMHASD CAL2019’ that way I can save the images easily all in one place!

Small print - Feel free to ask me any questions that are not covered by the rules but if you do ask me a question that IS covered by the rules…then I’ll know you didn’t read them! Simon, Martin, Jim….! [this is scandalous Ed.]

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Gamma Cygni Nebula, IC1318

28th August 2018

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The Gamma Cygni Nebula describes the patches of nebulosity around Gamma Cygni, Sadr and consists of emission nebulae, dark dust clouds and star clusters. The area spams 3 degrees of sky so is a good subject to image with a small wide field refractor or prime lens on a tracking mount.

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Gamma Cygni Nebula, imaged by Julian Tworek.
Canon 100-400 zoom lens set to 200m, ISO800, 22x2min exposures. Modified Canon 20D

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Face on Spiral in Aquila, NGC6814

28th August 2018

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This face on spiral galaxy lies at a distance of about 66 million light years and is about 75,000 light years across or about half the size of the Milky Way Galaxy. This object has a fairly low surface brightness, and so will be a tougher to observe than the mag 11.3 would suggest. You'll need dark skies and a large aperture to really appreciate this.

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NGC6814, Face on Spiral in Aquila, Imaged by Debra Holton, using the Faulkes 2m telescope

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Globular Cluster in Serpens, NGC6539

28th August 2018

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NGC 6539 is a globular cluster in the constellation Serpens. It was discovered by Theodor Brorsen in 1856

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Globular Cluster NGC6539 Imaged by Debra Holton using the Faulks 2m Telescope.

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Globular Cluster in Baade’s Window, NGC6522

28th August 2018

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Two globular clusters very close to each other seen through the dense star field in the direction towards the centre of our Galaxy, in the constellation Sagittarius. These systems are relatively young for globular clusters, being only about 10 million years old.

They can be spotted between gamma1 and W Sagitarii (see finder chart below). NGC6522 (right) sits right in the centre of Baade's Window

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Image by Debra Holton of NGC6522 taken with the 2m Faulkes Telescope.

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Seyfert’s Sextet, NGC6027

28th August 2018

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Seyfert's Sextet is a group of galaxies about 190 million light-years away in the constellation Serpens Caput. The group appears to contain six members, but one of the galaxies is a background object and another "galaxy" is actually a separated part of one of the other galaxies. The gravitational interaction among these galaxies should continue for hundreds of millions of years. Ultimately, the galaxies will merge to form a single giant elliptical galaxy.

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NGC 6027 Seyfert's Sextet, imaged by Deborah Holton using the Faulks 2m Telescope

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Edge on Spiral in Serpens – NGC5964

27th August 2018

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Edge on Spiral galaxy in Serpens

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NGC5964 Imaged by Deborah Holtan using the Faulkes 2m Telescope

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The California Nebula – NGC1499

27th August 2018

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The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It is so named because it appears to resemble the outline of the US State of California. It is almost 2.5° long on the sky and, because of its very low surface brightness, it is extremely difficult to observe visually. It can be observed with a H-Beta filter (isolates the H-Beta line at 486 nm) in a rich-field telescope under dark skies. It lies at a distance of about 1,000 light years from Earth.
The California Nebula was discovered by E. E. Barnard in 1884.

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California Nebula by Julian Tworek.
DSLR, Light Pollution Filter, Short focus Refractor

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The Leo Triplet – M65, M66 and NGC3628

27th August 2018

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NGC 3628 is an unbarred spiral galaxy about 35 million light-years away in the constellation Leo. It was discovered by William Herschel in 1784. It has an approximately 300,000 light-years long tidal tail. NGC 3628 along with M65 and M66 form the famous Leo Triplet, a small group of galaxies. Its most conspicuous feature is the broad and obscuring band of dust located along the outer edge of its spiral arms, effectively transecting the galaxy to our view.

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Imaged by Martin Crow.

80mm Equinox ED Refractor @ f6 with Canon 400D, 8 x 60s

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Altair Astro AO EQ6-R, ZWO ASI294MC Pro

Total exposure ~4hrs
St Mary's Platt, Kent.

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Image by Kevin Langford

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