Webmaster – Page 3 – Crayford Manor House Astronomical Society Dartford

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Lunar Images by Leigh Slomer

6th April 2021

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| 2:28 pm

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Caldwell 14, C14, The Double Cluster

11th March 2021

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| 8:51 pm

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The Double Cluster is the common name for the naked-eye (OK you will need Binoculars in light polluted areas such as Crayford) open clusters NGC 884 and NGC 869, which are close together in the constellation Perseus. NGC 884 and NGC 869 are at distances of 7600 and 6800 light-years away, respectively, so they are close to one another in space as well.

They are relatively young clusters, with NGC 869 5.6 million years and NGC 884 at 3.2 million years according to the 2000 Sky Catalogue. In comparison, the Pleiades have an estimated age ranging from 75 million years to 150 million years.

They are also blue-shifted, with NGC 869 approaching Earth at a speed of 22 km/s and NGC 884 approaching at a similar speed of 21 km/s. Their hottest main sequence stars are of spectral type B0.

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Imaged by: Julian Tworek
Method: AstroTrac Canon 100-400 lens @ 200mm ISO800, 9 x 120s self modified Canon 20D DSLR

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Image of the Double Cluster taken from Kelling Heath with a Canon 600D, Modified with the Full Spectrum Mod and a Clip-in CLSCCD filter

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Image by Simon Dawes taken on 2010-09-13
Taken at Kelling heath using a Williams Optics ED80 and Canon 650D on a vixen GPDX mount (unguided)

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Images by Neil Webster

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Image by Neil Webster - No Details Provided

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NGC2174, The Monkey Head Nebula

11th March 2021

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| 8:42 pm

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NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175

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Images by Neil Webster

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[caption id="" align="aligncenter" width="800"] NGC-2174-Monkey-Head-Nebula Image by Neil Webster no details provided[/caption]

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Images by Leigh Slomer

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[caption id="" align="aligncenter" width="584"] 20210228_123255 Image by Leigh Slomer - no details provided[/caption]

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Open Cluster, Messier 35, NGC2168

11th March 2021

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| 8:34 pm

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An open cluster of stars in the northern constellation of Gemini

Images by Neil Webster

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[caption id="" align="aligncenter" width="800"] M-35-NGC-2158 Image by Neil Webster - No details provided[/caption]

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Competition: Image the Trapezium

7th February 2021

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| 8:15 pm

In this competition we are looking for images of the Trapezium at the heart of M42, the great Orion nebula. We normally think of the Trapezium as 4 stars but in large telescopes you can make out other stars, so all you need to do is submit an image of the Trapezium with more than 4 stars.

Sounds simple, but the main 4 stars of the trapezium are bright making it difficult to resolve the other stars.

This is possible in an 8" telescope - possibly smaller.

Tips:

use lucky imaging with short exposures.

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Images by Simon Dawes

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[caption id="" align="aligncenter" width="800"] The-Trapwzium Image by Simon Dawes EQ6 Pro, MN190mm, ZWO ASI1600, 500x 0.5s exposures. THIS IMAGE IS DISQUALIFIED FROM THE COMPETITION - SIMON IS THE JUDGE![/caption]

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Images by Richard Bohner

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[caption id="" align="aligncenter" width="426"] Here is a photo of Trapezium cluster I took a few weeks ago with my iPhone through my 102mm Maksutov scope. I think the magnification is about 100X. Don’t know ISO because it was taken with phone camera. You can see five stars. I plan to take out my bigger scope and try again. “Cheers”[/caption]

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Sir Patrick Moore Prize

3rd February 2021

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| 5:25 pm

Congratulations to our very own Rita Whiting for being awarded the Sir Patrick Moore Prize for Astronomy outreach, Rita does so much for our society and outreach with local groups over such a long period of time this is a well deserved award. Well done Rita!

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Dartford Grammar School Astronomy Club – Virtual Observing Session

28th January 2021

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| 8:35 pm

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Our society currently supports the Dartford Grammar School Astronomy Club, and on the 25th January 2021 we held a virtual observing evening using Simon's observatory.

The students really enjoyed the evening

'The boys from last night have been on the google classroom leaving you rave reviews'

'Last night blew their minds! They loved it.'

[caption id="" align="aligncenter" width="500"] Moon-2021-01-25-1926 Image by Simon Dawes & Dartford Grammar School Astronomical Society[/caption][caption id="" align="aligncenter" width="384"] Mars-2021-01-25-1935. Image by Simon Dawes & Dartford Grammar School Astronomical Society[/caption][caption id="" align="aligncenter" width="630"] M42-100s-integrationt Image by Simon Dawes & Dartford Grammar School Astronomical Society[/caption]

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Lunar Halo/Corona Competition

26th January 2021

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| 4:48 pm

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Lunar Halo Competition

As the name suggests, take an image of a Lunar Halo.

Rules:

Whilst the points awarding is somewhat ambiguous I’ll be looking for the following…

Technically a good image (in focus)
Well composed
Other points of interest (foreground or background)
A good story – if you have a story of how you took the image it can’t hurt!

Entry criteria:

You can only enter if you are a paid up member (any tier of membership)
Entries must be to webmaster@crayfordmanorastro.com – feel free to post them on what’s app as well!

Entries:

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Images By Diane Clarke

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[caption id="" align="aligncenter" width="800"] Image By Diane Clarke. The two stars to the left of the Moon are Castor & Pollux in the constellation of Gemini Image details, Taken on 30.12.20 @ 21.48 Camera EOS 750D, Lens Sigma 18 -250 @18mm 1/2 Sec @ f3.5, Image as taken Static Tripod[/caption][caption id="" align="aligncenter" width="800"] MG_2585c Image by Diane Clarke This image shows the Moon and a 22° lunar halo, along with the stars of Gemini Aruga, Taurus & Orion Image details, Canon EOS 750D, Sigma 18 - 250mm lens @ 18mm 8 sec @ f5.6, ISO 800, 25.01.21 @ 20.48 hrs Static Tripod Image as shot[/caption]

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Images by Leigh Slomer

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[caption id="" align="aligncenter" width="800"] Image by Leigh Slomer Taken with a stock Canon EOS 200d and a Samyang 135mm lens. Exposure time was 1/5 of a second at ISO 400 at an f ratio of 2.8. Processed in GIMP.[/caption]

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Images by Jim Burchell

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[caption id="" align="aligncenter" width="800"] 20210125_214700 Image by Jim Burchel image taken on the Evening of 25/01/21. Image taken with a pentax K70. ISO 800/ F8 and 30 second exposure. Image showing some part of Orion Taurus and the Pleiades..[/caption]

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Objectives

8th January 2021

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| 12:17 pm

CMHASD Objectives:

To improve Dartford Light Pollution for CMHASD observation at the Pavilion and geographically as far as possible, from x to y by date z as measured from the Pavilion using a calibrated Sky Quality Meter.
To Link the Darkford event with the 60th Anniversary of CMHASD
To make the community of Dartford (and beyond by association) aware of CMHASD and market our membership and outreach services:
To increase the influence of CMHASD with local and national authorities to meet agreed objectives:
To find and make allies with other organisations to achieve mutually agreeable objectives

Community Objectives:

To identify and work with others (including Dartford Local Authority and the media) to designate a 'Darkford Night' that will (as far as possible) allow a general 'switch off' of external lighting for the citizens of Dartford to enjoy the night sky:
To draw attention to the blight of light pollution and educate the community against unnecessary and anti-social use of external lighting:
To promote dark-skies and 'stargazing' as a right for ALL citizens of Dartford (and beyond) and to show just what citizens are missing in the night sky:
To increase interest in astronomy and 'stargazing' amongst children and adults alike:
To urge thoughtful social-responsibility within business and industry to ensure that sensible use of nighttime lighting and avoidance of thoughtless and anti-social light polluting practice.....

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Author: Webmaster

Leigh Slomers Images of the International Space Station

Lunar Images by Leigh Slomer

Caldwell 14, C14, The Double Cluster

Images by Neil Webster

NGC2174, The Monkey Head Nebula

Images by Neil Webster

Images by Leigh Slomer

Open Cluster, Messier 35, NGC2168

Images by Neil Webster

Competition: Image the Trapezium

Images by Simon Dawes

Images by Richard Bohner

Sir Patrick Moore Prize

Dartford Grammar School Astronomy Club – Virtual Observing Session

Lunar Halo/Corona Competition

Lunar Halo Competition

Rules:

Entry criteria:

Entries:

Images By Diane Clarke

Images by Leigh Slomer

Images by Jim Burchell

Objectives

CMHASD Objectives:

Community Objectives: