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Mercury

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About this observation
Observer
Leo Aerts
Time of observation
30/11/2019 - 08:11
Object
Mercury
Observing location
Heist op den Berg, Belgium
Equipment
C14 scope
ASI 290MM webcam
Baader Ir filter
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Mercury, at 6”4 apparent diameter.  The planet was at an altitude of 21° and seeing was excellent for the altitude.  Nonetheless, a difficult observation.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
BAA Gallery Planets Mercury and Venus
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Mercury

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About this observation
Observer
Leo Aerts
Time of observation
30/11/2019 - 08:11
Object
Mercury
Observing location
Heist op den Berg, Belgium
Equipment
C14 scope
Baader Ir filter
ASI 290MM webcam
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Mercury, at 6”4 apparent diameter.  The planet was at an altitude of 21° and seeing was excellent for the altitude.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
BAA Gallery Planets Mercury and Venus
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Mercury Solar Transit 2019

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About this observation
Observer
Stuart Green
Time of observation
11/11/2019 - 12:54
Object
Mercury
Observing location
Redditch, Worcester, UK
Equipment
125mm Tecnosky refractor fitted with Lunt B1800 Ca II K module and a Basler acA1920-155um with a 5x PowerMate
Exposure
499 frames at 10ms, stacked and sharpened
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Mercury transit of 2019-November captured in Ca II K light.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
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SUN HALPHA 20191130 1110-1141UT PROM CFB

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Observer
Carl Bowron
Time of observation
30/11/2019 - 11:10
Object
Sun
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Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
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Solar diagram 25-11-19_20191126_0001

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About this observation
Observer
Monty Leventhal
Time of observation
25/11/2019 - 21:20
Object
Sun
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Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
John Chuter's picture

Dark skies: A journey into the wild night

Tiffany Francis, who is familiar with the starry skies above the South Downs where she lives, may already be known to some readers as a writer on food (Food you can forage), the natural world and the need to protect it. In this latest book she tells of travels around Britain and Europe in search of both daytime and night-time landscapes.

John Chuter's picture

Gerard P. Kuiper and the rise of modern planetary science

Gerard Kuiper (1905–1973) was one of the greatest, most controversial astronomers of the twentieth century and effectively the father of modern lunar and planetary science. His name is commemorated in the Kuiper Belt of comets, asteroids and planetisimals at the edge of our solar system, as well as by craters on the Moon, Mercury and Mars. Remarkably however, until now there has been no major biography of this influential figure.

John Chuter's picture

The Universe explained – a cosmic Q&A

‘From America to Australia, China to Columbia, the Q&A session of our lectures is often the best part.’ So begins the introduction to this ambitiously titled book from the prolific writing team of Heather Couper and Nigel Henbest, which proceeds to pose and answer questions with all the conversational enthusiasm of such an event.

John Chuter's picture

Sky Notes: 2019 December & 2020 January

(Written for 22:00 UT in the UK on January 1.)

Looking east we see that Leo has now risen, whilst ahead of the lion – travelling westwards along the ecliptic – we find Cancer and Gemini. The former contains M44, often referred to as Praesepe or the Beehive Cluster, which is visited by a waning gibbous Moon in the early hours of Jan 12 when a number of occultations take place.

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DWB 111 - The "Propellor Nebula"

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About this observation
Observer
Graham Roberts
Time of observation
07/09/2019 - 22:30
Object
DWB 111
Observing location
Redhill, Surrey, UK
Equipment
William Optics GT81 + Focal Reducer FL 382mm f4.72
ZWO1600MM camera
Exposure
22 x 300 sec Ha, 8 x 300 sec OIII & SII
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In a quest to find and image new targets Graham's curiosity was drawn towards a more obscure catalogue of HII emission nebula, in particular DWB 111, AKA Simeis 57 or The Propellor Nebula.  The object was first catalogued in the early 1950s by the Crimean Astronomical Observatory at Simeiz, Ukraine as number 57 of a total of 306 HII regions!  Then in 1969 H.R. Dickel, H. Wendker and J. H. Bieritz (DWB) developed a catalogue of 193 optically visible HII objects in the Cygnus-X region of the Cygnus constellation, which included DWB 111.  Strictly speaking the Propellor consists of DWB 111 & 119 with other close-by features DWB 107,108, 118, 125 & 126.

Whatever the nomenclature, locating DWB 111 was difficult but Graham eventually found and installed the necessary data.  The target is located between Vega and Deneb, which at this time of the year tracks northwest directly above his observatory, meaning imaging is confined to just about 2 hours due to local obstructions.  Graham concentrated on imaging the Ha wavelength, with only a few SII and OIII subs, which are both weak in nature.  However, the results speak for themselves and Graham has presented three separate versions for consideration.  I chose the SHO version, but the others show a wealth of additional information and they can be seen on his website at 

https://watchthisspaceman.wordpress.com/2019/10/12/fabric-of-reality/

Numerous filament-like threads produce fascinating structures which run throughout the nebulosity, making for a truly exciting image. Additional integration time is planned for the future.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.

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