The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d

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Mark Redgwell

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Mar 15, 2017, 7:10:50 PM3/15/17
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The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d https://www.flickr.com/photos/8396454@N03/33080369830/in/dateposted-public/

J R

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Mar 16, 2017, 5:08:34 AM3/16/17
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Mark

They have come out very well.  What exposure times did you use?

I came across something the other day that might be of interest re dslrs and as I think you took some of your earlier images with a fast zoom f2.8 lens.  This post shows the results of 3 second f1.8 exposures using a 75mm lens on a table top gorilla pod.  3 seconds at f2.8 equates to 10 at f5 and 50 seconds at say f11, same iso throughout.


James

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On 15 Mar 2017, at 23:10, Mark Redgwell <markredg...@gmail.com> wrote:

The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d https://www.flickr.com/photos/8396454@N03/33080369830/in/dateposted-public/

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Graeme Coates

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Mar 16, 2017, 10:21:19 AM3/16/17
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Nice shot – handheld again for this one? Looks like we were doing similar things anyhow!

 

Was first clear night in what seems an age – and I got chance to finally sort out the spacings, connectors, etc for my TS OAG9, FR, camera, etc… I have another set of images that need processing, but the moon stopped play so I couldn’t go for anything too adventurous – will post that when I’ve sorted it. Good news is that the spacings work, and the guiding did too so I should be able to guide in front of my filters now which is a big bonus. And it’ll fit on the newt as well when it’s finally reassembled as it has about 55mm backfocus for the coma corrector. Just needs a couple of extra holes tapped in the filter wheel front plate to really secure it up.

 

Anyhow, had a quick stab at the moon once it was bright enough that it wasn’t worth doing a lot more – taken in H Alpha on the FLT110 through the FR, which isn’t ideal as it undersamples enormously, but did a drizzle stack of the best 45 frames (out of 150) with Autostakkert, processed in Registax and a resize/tweak in Photoshop.

 

Image at: https://flic.kr/p/RL4nmi

 

Cheers

 

Graeme

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Mark Redgwell

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Mar 16, 2017, 12:05:22 PM3/16/17
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Mine was on my optecs tripod 

On 16 March 2017 at 14:21, Graeme Coates <gra...@chromosphere.co.uk> wrote:

Nice shot – handheld again for this one? Looks like we were doing similar things anyhow!

 

Was first clear night in what seems an age – and I got chance to finally sort out the spacings, connectors, etc for my TS OAG9, FR, camera, etc… I have another set of images that need processing, but the moon stopped play so I couldn’t go for anything too adventurous – will post that when I’ve sorted it. Good news is that the spacings work, and the guiding did too so I should be able to guide in front of my filters now which is a big bonus. And it’ll fit on the newt as well when it’s finally reassembled as it has about 55mm backfocus for the coma corrector. Just needs a couple of extra holes tapped in the filter wheel front plate to really secure it up.

 

Anyhow, had a quick stab at the moon once it was bright enough that it wasn’t worth doing a lot more – taken in H Alpha on the FLT110 through the FR, which isn’t ideal as it undersamples enormously, but did a drizzle stack of the best 45 frames (out of 150) with Autostakkert, processed in Registax and a resize/tweak in Photoshop.

 

Image at: https://flic.kr/p/RL4nmi

 

Cheers

 

Graeme

 

 

From: croydo...@googlegroups.com [mailto:croydonastro@googlegroups.com] On Behalf Of Mark Redgwell
Sent: 15 March 2017 23:11
To: croydo...@googlegroups.com
Subject: [croydonastro - 3033] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d

 

The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d https://www.flickr.com/photos/8396454@N03/33080369830/in/dateposted-public/

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Mark Redgwell

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Mar 16, 2017, 12:09:00 PM3/16/17
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The Camera settings from the EXIF  i am awaiting a new Tripod for the Maksutov 127 from Astroboot  so the travel scope is all i can use at present on the OPTEX PT3900 Tripod

  • ƒ/2.0
 
  • 50.0 mm
  • 1/250
 
  • 200


On 16 March 2017 at 09:08, 'J R' via croydonastro <croydo...@googlegroups.com> wrote:
Mark

They have come out very well.  What exposure times did you use?

I came across something the other day that might be of interest re dslrs and as I think you took some of your earlier images with a fast zoom f2.8 lens.  This post shows the results of 3 second f1.8 exposures using a 75mm lens on a table top gorilla pod.  3 seconds at f2.8 equates to 10 at f5 and 50 seconds at say f11, same iso throughout.


James

Sent from my iPad

On 15 Mar 2017, at 23:10, Mark Redgwell <markredg...@gmail.com> wrote:

The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d https://www.flickr.com/photos/8396454@N03/33080369830/in/dateposted-public/

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Tim R

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Mar 16, 2017, 2:46:45 PM3/16/17
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I hesitate to say it but will anyway. Have you thought of taking multiple exposures and stacking them? I think you might be very pleasantly surprised. It is not much of an offer and you may well get better elsewhere but I'd be glad to have a try for you either with or without you present.



From: croydo...@googlegroups.com <croydo...@googlegroups.com> on behalf of Mark Redgwell <markredg...@gmail.com>
Sent: 16 March 2017 16:08
To: croydo...@googlegroups.com
Subject: Re: [croydonastro - 3037] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d
 
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Mark Redgwell

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Mar 16, 2017, 9:38:38 PM3/16/17
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NO I Never stack images Tin i am a single image Astronomer

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Tim R

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Mar 17, 2017, 1:39:04 AM3/17/17
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If that is the path for you then walk it. Enjoy!

Have you thought of using silver based media? I think if single images were my way I'd go for the full fat version. I'd be sensitising film and using medium format. The good bit of that path is the hardware costs almost nothing. I recently bought a Pentax Spotmatic with several lenses which were the valuable bit for GBP20.

Whatever you do have fun.
Sent: 17 March 2017 01:38
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Subject: Re: [croydonastro - 3039] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d
 
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Mark Redgwell

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Mar 17, 2017, 3:55:09 AM3/17/17
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Tim

I am in the digital age and will stay that way .

At present due to my financial restraints (Beniffits) buying Astronomy Kit is an often painful time for me

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Tim R

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Mar 17, 2017, 4:51:04 AM3/17/17
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That is fine. As I say whatever you do have fun.





Sent: 17 March 2017 07:55
To: croydo...@googlegroups.com
Subject: Re: [croydonastro - 3041] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d
 

John Mills

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Mar 22, 2017, 6:33:35 PM3/22/17
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Haha - Just see this reply! I have to agree with Tim...

Well Mark, it ain't rocket science to stack a few images. You will never
get decent images using 'I'm a single image astronomer' mentality... and
certainly not from the Croydon area :-)

If its taking images of the planets you prefer to do then why not try
using a webcam? Even cheap ones like the old Philips Toucam can do a
reasonable job. In fact, that's what Damian Peach used when he first
started out. Using a free program like Registax will process an AVI file
from a webcam and then sort out the best quality frames and stack those
together. The results will be very good and far superior than taking a
one off exposure from a DSLR.

John M.


On 17/03/2017 05:39, Tim R wrote:
>
> If that is the path for you then walk it. Enjoy!
>
> Have you thought of using silver based media? I think if single images
> were my way I'd go for the full fat version. I'd be sensitising film and
> using medium format. The good bit of that path is the hardware costs
> almost nothing. I recently bought a Pentax Spotmatic with several lenses
> which were the valuable bit for GBP20.
>
> Whatever you do have fun.
> ------------------------------------------------------------------------
> *From:* croydo...@googlegroups.com <croydo...@googlegroups.com> on
> behalf of Mark Redgwell <markredg...@gmail.com>
> *Sent:* 17 March 2017 01:38
> *To:* croydo...@googlegroups.com
> *Subject:* Re: [croydonastro - 3039] The Rising Moon 17 3 2017 PM 70 mm
> Travel scope 40d
>
> NO I Never stack images Tin i am a single image Astronomer
>
> On 16 March 2017 at 18:46, Tim R <tim.r...@hotmail.co.uk
> <mailto:tim.r...@hotmail.co.uk>> wrote:
>
> I hesitate to say it but will anyway. Have you thought of taking
> multiple exposures and stacking them? I think you might be very
> pleasantly surprised. It is not much of an offer and you may well
> get better elsewhere but I'd be glad to have a try for you either
> with or without you present.
>


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Mark Redgwell

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Mar 23, 2017, 6:45:33 AM3/23/17
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At present i can not afford a web cam i tried a cheap ebay one for £8 and it was a Disaster with dust spots all over the Sensor under the plastic lens cover it was cleaned by my friend Guy Wells  but is just not an Astro webcam  , Which made me roast the people selling it .

it is a 300,000 pixels camera i have yet to try and see Jupiter with it i need a longer USB Lead before i can try that am going to keep on trying 

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Tim R

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Mar 23, 2017, 7:21:48 AM3/23/17
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You could take videos with the EOS-M. The software mentioned is free and not too difficult to use.

From: croydo...@googlegroups.com <croydo...@googlegroups.com> on behalf of Mark Redgwell <markredg...@gmail.com>
Sent: 23 March 2017 10:45
To: croydo...@googlegroups.com
Subject: Re: [croydonastro - 3062] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d
 
At present i can not afford a web cam i tried a cheap ebay one for £8 and it was a Disaster with dust spots all over the Sensor under the plastic lens cover it was cleaned by my friend Guy Wells  but is just not an Astro webcam  , Which made me roast the people selling it .

it is a 300,000 pixels camera i have yet to try and see Jupiter with it i need a longer USB Lead before i can try that am going to keep on trying 

--

J R

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Mar 23, 2017, 7:33:02 AM3/23/17
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Definitely try if you have video on the dslr.  The big chip accommodates the moons as well.  I can't find it immediately but I did this some time back.  The individual frames looked like yours and the final version from Registax was surprisingly good, even if miles away from D Peach quality.

James

Sent from my iPad
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Mark Redgwell

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Mar 23, 2017, 8:47:00 AM3/23/17
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1st i have to figure out how to do the firm ware up date that is not allowing me to use the EOS-M

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Tim R

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Mar 23, 2017, 8:52:39 AM3/23/17
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I took videos with it before I lent it to you but if there is a problem let us meet up and I'll sort it out or lend you another camera. There is a new firmware update but that is in connection with aberration correction for two specific Canon lenses. I don't think that is relevant for what you'd be doing with a telescope.

Sent: 23 March 2017 12:46
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Subject: Re: [croydonastro - 3066] The Rising Moon 17 3 2017 PM 70 mm Travel scope 40d
 
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