Category: Digital

Jets of Halley

Comet 1P/Halley
Comet 1P/Halley

Hey ASOD- friends!

This is a sketch of the famous comet P/ Halley.
The comet showed some structures in the circular coma (jets), and
it was interesting to see an occultation of the nearby star to west by
the centralcondensation later!
In january 1986, comet Halley got a 2 deg. long tail and was a
fine object in binos and telescopes from Norway.
I found Halley early (8. oct.- 85), and followed it carefully all the way
on northern sky and from Tenerife in apr. – 86.
At this time I was leader of the comet- section in Norway.
The sketch was made with graphite (pencil) on white paper (inverted).
Location : Trondheim, Norway. Info on my sketch!

Best wishes from : Per-Jonny Bremseth.

Kemble’s Cascade & NGC 1502 – Camelopardalis

Kemble's Cascade and NGC 1502
Kemble’s Cascade and NGC 1502

Hi ASOD, sending this observation of this magnificent object. It was the first time I could see this object and had to make the sketch. is a large area with a number of very luminous stars that end up in the open cluster NGC 1502 with its easy double star Struve 485 detectable at low power. This object will be of my favorite deep sky objects, I hope you can watch it and enjoy it as much as I do.

regards.

Object name: Kemble’s Cascade & NGC 1502 Camelopardalis
Object type: Asterism & Open cluster
Location: Bonilla Cuenca ( spain )
Date: 7 October 2013
Hour: 00:00 < 00:45
Media: graphite pencil, processed and inverted gimp 2.8
Optical equipment: Refractor Tele Vue 101 F / 5,4 Genesis SDF Eye piece ES 30mm
Magnification 18x True field 4,5°

Sky conditions: Stable sky, light wind. Nelm 6,2 Temperature 10,2°C Relative humidity 57% Borthle scale 3/9

http://dibujodelcielonocturno.blogspot.com.es/

Color Impressions of Nova Delphini 2013

Nova Delphini 2013
Nova Delphini 2013

As with some novae I have followed in the past I have been fascinated by the colours displayed as they develop. In particular one in Vulpecula (1960/70s) came to display an intense mauve/magenta hue (pink to some). If I recall right this was ascribed as it going through the “nebular phase”. More recently one in either Cygnus or Cassiopeia became the most intensely blue star I’ve ever seen!

While conceding the subjectivity of colour perception/judgement and so on (and differences with others’ monitors and such) a few details about these impressions……

Aug 15: Creamy Yellow. Aug 19: slightly more Yellow. Aug 26: Peach! Aug 30: Buttercup Yellow.

Early Sep. it started to display hues that I struggled to name but opted for Bronze/Coppery-Yellows.

Then it reddened markedly and even so could not quite equate it to the redness of carbon stars V Aql or of X Sge which was more near the nova’s brightness then.

The last (Oct 5) observation showed a more definite difference to X Sge: it was now fainter than X but looked slightly more toward red-violet.

David

[Our thanks to David for allowing us to repost this from the CloudyNights.com sketching forum. –Jeremy]

Orion’s belt stars

Orion's Belt
Orion’s Belt

Hello ASOD, here join my last watercolor

Object Name (Orion’s belt stars and M42)
Object Type (Constellation and nebulae)
Location (Porquerolles on board of Aquarellia)
Date (02-10-2013)
Media (watercolor on white paper, paint.net for inverting the sky)

In the night of October the first, our old two masts Aquarellia was anchoring close to the harbour of Porquerolles, one of the three “Provencal golden islands”.
At one o’clock in the night I wake me up,… maybe ‘cause of some wave noise? I was surprised by seeing the Orion’s belt stars and M42 rising close to the ‘Sainte Agathe’ fort. With my 7×50 binoculars I sketch this original encounter, the mythic Orion warrior at the rear of a real castle.
The French coast, here in my nord, is full of light pollution but to my surprise, the castle illumination was the only light in the sight. The island is not so close to the polluted coast, so the Orion’s constellation was pure in the dark while rising.
This watercolour was made on board with local salt water (;

I hope you enjoy

Michel Deconinck

http://astro.aquarellia.com/

Phantom Erupts

Messier 74
Messier 74

Object Name: M74 and SN2013ej
Object Type: galaxy and supernova
Location: Cherry Springs, Pennsylvania
Date: August 5, 2013
Media: graphite pencil, white paper, digitally inverted and scaled

Notes: 16″ Newtonian, 225x. Observed UT 2013-08-05 06:30-08:20. 10 deg. C, 75% humidity. Exceptional transparency, good seeing. Most of the night the transparency was variable, but it became exceptionally good (at least for summer) one hour before astronomical twilight. As M74 was then reaching respectable altitude, it erupted with detail. The very compact HII region Hodge 627 was seen intermittently within the star cloud at the end of the southern arm. Although the exaggerates this brightness difference, supernova 2013ej was indeed brighter than the surrounding Milky Way stars.

The Whispy Veil

NGC 6960
NGC 6960

This is a sketch of NGC 6960, part of the Veil Nebula. Originally sketched on white paper, reversed and processed in Gimp 2. This is my second time doing this method, and I am pleased with the results.

Scope: Criterion RV-6
Ocular: GSO 32mm Plossl + Celestron.
UHC
Location: Prescott, AZ

Thanks for looking!

Little Gem Nebula – NGC 6818

NGC 6818
NGC 6818

NGC 6818, also known as the Little Gem Nebula, is a small but bright planetary in Sagittarius. It is one of my favorite summer objects because of its annular structure, which is not difficult to see even with my small telescope. The best view comes at 222x with an UHC filter, that makes its ring shape easier to spot. Curiously, it seems that the central dark region is not exactly in the center but slightly off to the north, and the ring is brighter in its southern half. At low powers the nebula shows a lovely greenish-blue color, which is typical of many bright planetaries.

Sketch: 2HB graphite pencil on white paper, scanned and processed with Photoshop CS3

Object Name: NGC 6818, the Little Gem Nebula

Object Type: Planetary nebula

Location: Asturias, Spain

Date: August 31st, 2013 22:20 UT

Instrument: 120mm f/8.3 refractor + Nagler T6 9mm + barlow 2x (222x)

NELM: 5.6

Best regards,

Diego González

https://sites.google.com/site/astrodgonzalez/