#101  
Old 05-09-2011, 05:15 PM
orestis's Avatar
orestis
Registered User

orestis is offline
 
Join Date: Jun 2009
Location: southern highlands, Australia
Posts: 679
Awesome sketches Paddy,

Your comet sketch looks so much more realistic than mine.I really need to get the equipment to sketch in this style.

Great view
thanks
Orestis
Reply With Quote
  #102  
Old 06-09-2011, 11:22 AM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,797
Michael, my apology for my delay in responding. I've only been able to dart in and out of IIS for a while now, and I didn't want to rush a response to your, and Paddy's, work.

Marvelous stuff with the comets, gentlemen! Michael, good thinking with the periodic observations of Garradd. I'm really surprised that there had been so much movement over two and a half hours.

Paddy, very nice. Very nice! I reall don't have any suggestions to make other than keep it up! I told ya the Mellish Technique isn't hard! Didn't I?
Reply With Quote
  #103  
Old 08-09-2011, 04:14 PM
orestis's Avatar
orestis
Registered User

orestis is offline
 
Join Date: Jun 2009
Location: southern highlands, Australia
Posts: 679
I tried out the Mellish technique!

Hi everyone,

I found a piece of black a4 paper and decided to try and transpose a graphite sketch onto black paper using a simple white coloured pencil.

And here is my result compared to a graphite sketch (inverted).This is a sketch of comet garrad.

What do you think any suggestions?

Cheers Orestis
Attached Thumbnails
Click for full-size image (Comet Garrad Mellish Technique IIS.JPG)
168.1 KB46 views
Click for full-size image (Comet garrad IIS.jpg)
138.2 KB34 views

Last edited by orestis; 09-09-2011 at 09:32 AM.
Reply With Quote
  #104  
Old 02-10-2011, 01:46 PM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,797
Hey Orestis,

sorry it's taken a little time to respond to this sketch of yours.

I've just come back to them, and I've noticed one thing with the redo:

a small demarkation between the coma and the tail.

There is a way to help not have the demarkation there. If you look in the "Sketching Tips" sticky, you'll see my last post there about working in layers. You can do this with this comet sketch of yours very effectively.

*Start with the coma very faintly, and just as faintly add the tail. This is to give you their relative placement and approximate extent.

* Next work the tail some more, starting from the coma. Don't worry if you reach into the area of the coma. Work from the coma out. This will allow the brush itself to give you the soft edge finish. You can go over the core of the tail as needed to increase its brightness.

* The coma you work in a similar way, out from the core. A really soft small brush is a big help here as you can really control the development of the intensity. The junction of the coma and the tail won't be an issue.

* To finish you can add the core of the comet with either a fine brush by dabbing the tip however number of times you need to achieve the effect (recommended as it is diffuse), or drawn in.

Have a number of practice goes on the one sheet. This way you can develop your touch, and see directly what worked best and what didn't.

When you're happy with the developed touch, have another go at the "redo", and see what you think.

Mental
Reply With Quote
  #105  
Old 03-10-2011, 11:12 PM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,797
Before and after sketches of NGC 253

Hello all,

I thought I'd share a couple of sketches of mine that show how my own technique has developed over the last year.

I've harped on a lot about the influence of our late mate Scott Mellish, but I think these two sketches show what I mean.

The first was done a shade under one year ago, before I got to know Scott and his technique. The second one was done in June. Sure there would be a difference in the amount of subtle detail that would be visible in from a dark site, but the way I've been able to illustrate the same object is striking. Well, at least for me.

Both are done on A4 size black paper. The first, done from my home in Sydney, was only using white pencil and ink. The second, done form Wiruna near Ilford in NSW, was done using white pastel & white charcoal. What most surprises me in the comparison is the greater control I now have of the media to produce a much more true-to-life rendition of DSO's.

I hope you find the comparison a striking one too.

Mental.
Attached Thumbnails
Click for full-size image (435.jpg)
48.8 KB246 views
Click for full-size image (436.jpg)
64.8 KB267 views

Last edited by mental4astro; 07-10-2011 at 10:53 AM. Reason: typo
Reply With Quote
  #106  
Old 06-10-2011, 12:10 PM
Paddy's Avatar
Paddy (Patrick)
Canis Minor

Paddy is offline
 
Join Date: Jun 2007
Location: Strangways, Vic
Posts: 2,210
A very impressive comparison, Alex. Amazing how much more detail can be included with the Mellish technique.
Reply With Quote
  #107  
Old 06-10-2011, 03:48 PM
pgc hunter's Avatar
pgc hunter
Registered User

pgc hunter is offline
 
Join Date: Feb 2009
Location: Renmark, SA
Posts: 2,948
Love the second one Alex, you've captured the subtle detail very well. Gotta try this technique out myself.
Reply With Quote
  #108  
Old 06-10-2011, 10:36 PM
barx1963's Avatar
barx1963 (Malcolm)
Bright the hawk's flight

barx1963 is offline
 
Join Date: Nov 2008
Location: Waurn Ponds Vic
Posts: 3,843
Good to see our very own Alex featured in the latest edition of Astronomy Now magazine from the UK with a link to his thread on the Mellish technique. It was part of a larger article specifically on the technique.
Reply With Quote
  #109  
Old 11-10-2011, 10:21 PM
Paddy's Avatar
Paddy (Patrick)
Canis Minor

Paddy is offline
 
Join Date: Jun 2007
Location: Strangways, Vic
Posts: 2,210
Thanks for the heads up Malcolm. Went out and got a copy - great to see the article and Alex's "sketch".
Reply With Quote
  #110  
Old 31-10-2011, 10:36 PM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,797
Thanks for that head's up too, Malcolm. Got my copy too and have been showing the page to whoever I've been able to nail to the floor, . I'm tickled pink about it. Might send a few more astro nuts around here to IIS hopefully.

This October New Moon saw me attend for the first time the Ice In Space Astro Camp. The forecast threatened thunderstorms, but as luck would have it, the clouds parted to give us a great view of the sky. Thunderstorms did happen, but we only saw the glow of the flash of lightening from a massive storm system that lay behind a ridge.

My first sketch of the night was of 47 Tuc (NGC 104). This massive globular cluster is considered to be the remnant core of a galaxy long ago swallowed up by our Milky Way. There are two other such galaxy core remnants, Omega Centauri & M2.

The view of 47 Tuc through my 17.5” is nothing but astounding. At 125X the whole FOV is filled with countless stars. Its core is very compact and extremely bright, and the reach of the remaining ball of stars is impossible to determine its limits. Transparency was a little lacking, but you take what you get sometimes.

For once I added a FOV ring around the subject. My customary ringless sketch lacked a little something with this one as the field doesn’t extend to the edge of the page, the excessive blank black caused a lack of context. The FOV ring this time I feel gives that context to the sketch with only a small amount of extraneous stars lying just outside the ring.

An interesting comparison is between 47 Tuc and Omega Centauri, the two largest globular clusters in the sky. Omega’s core is larger in apparent size, while 47’s is much more compact and intense. This makes for an easier pick-up of ‘fingerprint’ patterns within Omega, while these patterns are much more subtle and even fickle in 47 Tuc. Still, these differences make for their distinct & unique qualities.

This was a challenge to sketch faithfully. As most of the stars in this cluster are actually quite faint on their own, it became more of a matter of attempting to lay down an impression of the collective features. The patchy ‘mini clusters’ around the perimeter, the suggested arcs and lines, and the distinct three ‘dark’ spots on the core, one of which is more of a bar that lies above two of the spots.

I hope you enjoy this sketch.

Alex M.

Object: 47 Tuc (NGC 104)
Scope: 17.5” f/4.5 push-pull dob
Gear: 16mm Unitron König, 125X
Location: Lostock, NSW, Oz
Date: 30th October 2011
Media: White pastel pencil and white gel pen on A4 size black paper
Duration: 1.5hrs.
Attached Thumbnails
Click for full-size image (47 Tuc mod (2).jpg)
84.8 KB92 views
Reply With Quote
  #111  
Old 31-10-2011, 11:40 PM
barx1963's Avatar
barx1963 (Malcolm)
Bright the hawk's flight

barx1963 is offline
 
Join Date: Nov 2008
Location: Waurn Ponds Vic
Posts: 3,843
Alex mate, that is exactly how 47Tuv looks in my 13mm Nagler at 113x. Excellent work.
BTW have been hearing good things about your sketching workshop at IISAC.

Malcolm
Reply With Quote
  #112  
Old 01-11-2011, 11:47 AM
michaellxv's Avatar
michaellxv (Michael)
Registered User

michaellxv is offline
 
Join Date: Oct 2009
Location: Adelaide, Australia
Posts: 1,578
Alex that is awesome work. That is an excellent rendition of a fabulous object. 1.5hrs at the eyepiece must have been very tiring. I bet you were seeing spots everywhere after that effort.

Congrats on the mag article, I hope there is still some left.
Reply With Quote
  #113  
Old 01-11-2011, 10:05 PM
Paddy's Avatar
Paddy (Patrick)
Canis Minor

Paddy is offline
 
Join Date: Jun 2007
Location: Strangways, Vic
Posts: 2,210


That is just amazing Alex. As Malcolm says, just how it looks in the eyepiece. You've got the complex of arcs around the 'covered wagon' just right. Stunning, stunning, stunning and just absolutely stunning.

Did I forget to say

Oh, and

(from a dedicated non-smilie user)
Reply With Quote
  #114  
Old 03-11-2011, 07:34 PM
mozzie's Avatar
mozzie (Peter)
Registered User

mozzie is offline
 
Join Date: Mar 2007
Location: moonee beach
Posts: 2,179
hi all
after a fantastic astro camp and meeting alex i was excited about doing the sketching course with him....well iv'e all the necessary supplies i need to start sketching and have been doing some small test runs with g/c and some stars to get there different magnitudes i tell you alex makes it look easy.i'm hoping to do the tail of scorpio and a little g/c 6441 a nice easy something to start with.....lets hope the weather clears.......
Reply With Quote
  #115  
Old 20-11-2011, 06:37 AM
mozzie's Avatar
mozzie (Peter)
Registered User

mozzie is offline
 
Join Date: Mar 2007
Location: moonee beach
Posts: 2,179
hi all astro sketchers,after cloud cloud cloud and full moon finally got in the eyepiece last night and did 2 sketches of 2 small g/c and the surrounding stars.these are my first 2 sketches and will upload later today.
Reply With Quote
  #116  
Old 20-11-2011, 11:48 AM
mozzie's Avatar
mozzie (Peter)
Registered User

mozzie is offline
 
Join Date: Mar 2007
Location: moonee beach
Posts: 2,179
here is the 2 sketches i did last night,they are of 2 g/c that had slight brightening of there cores and some surrounding stars..they looked interesting to me and didn't look to complex for my first efforts.alex showed us his sketching at iisac 11 and iv'e been keen to have a go,alex makes it look easy but sitting there last night not knowing where to start i thought they have come out not to bad...getting or your gear in the right position and red light at the correct angle is going to be a learning curve.......
meade 14"sct with 35 panoptic at 102x,no filters seeing was not to good,transparency was fair lots of high faint cloud...that's summer...
Click image for larger version

Name:	IMG_0229.jpg
Views:	42
Size:	199.5 KB
ID:	104318

Click image for larger version

Name:	IMG_0230.jpg
Views:	40
Size:	200.0 KB
ID:	104319
Reply With Quote
  #117  
Old 20-11-2011, 01:19 PM
CChelle (Michelle)
Registered User

CChelle is offline
 
Join Date: May 2011
Location: Yarraman Qld Australia
Posts: 20
Terrific.

They really do look just like GCs look in my scope. Well done!
Reply With Quote
  #118  
Old 20-11-2011, 11:02 PM
Paddy's Avatar
Paddy (Patrick)
Canis Minor

Paddy is offline
 
Join Date: Jun 2007
Location: Strangways, Vic
Posts: 2,210
Great sketches Peter, they really capture the clusters well.
Reply With Quote
  #119  
Old 21-11-2011, 06:09 AM
mozzie's Avatar
mozzie (Peter)
Registered User

mozzie is offline
 
Join Date: Mar 2007
Location: moonee beach
Posts: 2,179
thanks michelle and patrick...it's something iv'e wanted to do for a long time and after meeting alex and getting some tips i hope to go down this path and produce some nice sketches....
Reply With Quote
  #120  
Old 21-11-2011, 12:55 PM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,797
Mozzie, very, very good start! Straight into the deep end with nothing less than two GC's!

You have achieved a nice amount of depth in the cores giving them a lovely glow. And the painstaking effort with the hundreds of surrounding stars is gold.

Please, do keep them coming.

Alex.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 04:30 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Advertisement
Astromechanics
Advertisement
Bintel
Advertisement
Testar
Advertisement
Lunatico Astronomical
Advertisement
Astronomy and Electronics Centre
Advertisement