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Equipment Discussions >> Classic Telescopes

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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950629 - 07/02/13 12:23 AM

Now I'm embarrassed again because I don't know where my images go when I take them. Yet.

My first image ever with BackyardEOS and the Canon T1i was a 60 second exposure on Deneb. No processing at all. PINPOINT STARS RIGHT TO THE CORNERS!

I'm a Cappy Hamper!

-Tim.


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tim53
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Reged: 12/17/04

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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950645 - 07/02/13 12:49 AM Attachment (29 downloads)

Here's a drastically reduced image of the Deneb region. Two minute exposure at 800 ISO. No darks or flats.

Of course, it's reduced in size, but the stars really are pinpoint to the corners!


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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950647 - 07/02/13 12:51 AM

Boy do I feel like an idiot. That's Vega, not Deneb!

-Tim.


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Dave M
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Reged: 08/03/04

Loc: Ohio
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950650 - 07/02/13 12:58 AM

That looks Tak-alicious, Nice work Tim

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Steve_M_M
Carpal Tunnel
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Reged: 06/09/04

Loc: Moorpark, CA
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950668 - 07/02/13 01:17 AM

Fantastic image Tim. I am out tonight doing some imaging too. A bit different though as I have my 60mm f20 Goto piggybacked on my 12" LX200 with a Mallincam Extreme in the Goto. You are seeing "all the sky" and I am seeing "a teeny tiny bit of sky". Clouds are rolling in here too, so I am packing up.

I love those Taks you acquired


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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: Steve_M_M]
      #5950706 - 07/02/13 02:20 AM Attachment (21 downloads)

Oh wow.

I still need to figure out how best to set the ISO on the T1i and acquire darks to subtract from the good stuff, but this is fun!

So here's a way cropped, way downsized pic of M10:


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Rich (RLTYS)Moderator
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Reged: 12/18/04

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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5950811 - 07/02/13 06:29 AM

Quote:

Here's a drastically reduced image of the Deneb region. Two minute exposure at 800 ISO. No darks or flats.

Of course, it's reduced in size, but the stars really are pinpoint to the corners!




Tim, a beautiful image of Vega but I was wondering about that long curved object (nebula?) to the lower left of Vega. What is it?

Rich (RLTYS)


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Chuck Hards
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Re: Tak Epsilon 130 in the dark! new [Re: Rich (RLTYS)]
      #5950854 - 07/02/13 07:33 AM

I'm still seeing a bit of streaking running up-and-down on the cropped pic.

But a great shot anyway!


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Chuck Hards
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Re: Tak Epsilon 130 in the dark! new [Re: Rich (RLTYS)]
      #5950855 - 07/02/13 07:36 AM

Quote:

Quote:

Here's a drastically reduced image of the Deneb region. Two minute exposure at 800 ISO. No darks or flats.

Of course, it's reduced in size, but the stars really are pinpoint to the corners!




Tim, a beautiful image of Vega but I was wondering about that long curved object (nebula?) to the lower left of Vega. What is it?

Rich (RLTYS)




I see it on the right side, too, with Vega dead-center on the tangent. I'm betting it's a reflection artifact, I don't have an atlas handy now to check on nebulosity.


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Dave M
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Reged: 08/03/04

Loc: Ohio
Re: Tak Epsilon 130 in the dark! new [Re: Chuck Hards]
      #5950978 - 07/02/13 09:36 AM

I tend to stick to ISO 800 on my canon 60D. 800 to 1600
is a good range to stick to, the noise in the image will
also be a lot worse imaging in the heat your imaging in.
That also looks like a reflection to me, from what i`m not sure but it looks like half a circle on the lower half of the image, so that might be a clue.
Darks, just put the body cap on the camera and take some shots at the same exposure length and ISO as the lights.
I like Images Plus software for image processing, its a little expensive but well worth it.


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tim53
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Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: Rich (RLTYS)]
      #5951035 - 07/02/13 10:16 AM

Quote:

Quote:

Here's a drastically reduced image of the Deneb region. Two minute exposure at 800 ISO. No darks or flats.

Of course, it's reduced in size, but the stars really are pinpoint to the corners!




Tim, a beautiful image of Vega but I was wondering about that long curved object (nebula?) to the lower left of Vega. What is it?

Rich (RLTYS)




I think it's a ghost reflection from the star on one of the corrector elements? It didn't seem to move, so I don't think it was stray light from one of the neighbors' porch lights or anything like that.

-Tim.


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tim53
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Reged: 12/17/04

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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951052 - 07/02/13 10:21 AM

Yeah, I can see elongation to the stars if I shoot over a minute. I did try one at 5 minutes for hoots, and it's smeared. 2 minutes worked okay, but 1 wasn't bad.

I should probably try piggybacking my Scorpion camera with a 70-200mm Quantaray lens as a guide scope and guide manually. I can piggyback it okay, but I am worried a little about flexure, because the lens and camera are hanging off a 1/4-20 bolt about an inch above the mount.

-Tim.


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tim53
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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951056 - 07/02/13 10:22 AM

It's warm at night here. Probably mid 70s. So plenty of noise in the camera.

-Tim.


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tim53
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Reged: 12/17/04

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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951392 - 07/02/13 01:53 PM Attachment (22 downloads)

So here's a heavily cropped stack of 5 one minute subs of the western Veil. I subtracted darks and applied a faked flat field correction to the files and realigned them all in Photoshop.

Since I don't have photoshop on my own laptop, I tethered it to my work laptop and processed it there. I'm just not familiar enough with Nebulosity to do it in there, and I don't own any other dedicated deep sky image processing software.

I shot these at 3200 ISO, which is too much, especially since it's been warm at night here. I did notice some drift in most of the images, so I'll want to figure out how to guide with the stuff I have with me.


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Dave M
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Reged: 08/03/04

Loc: Ohio
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951792 - 07/02/13 05:40 PM

Looks real nice Tim
Ive had great success guiding my Tak FSQ106 with a Orion starshoot autoguider and Stellarvue 50mm guider/finder scope, running PHD Guide.


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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: Dave M]
      #5951899 - 07/02/13 06:57 PM

I've used PhD a couple of times and like it. Also Astro IIDC can use a firewire camera for guiding.

Problem is that the EM-1 mount is too old to have a guider port, so I'll have to guide manually. But I can use one of the other cameras to display a live view and use software crosshairs to guid with in RA at least. I think my drift has all been PE rather than Dec. But I brought a flex cable from my Super Polaris mount to use in place of the rigid one on the tangent arm dec if I need to guide in dec manually. Hope the cable fits the Tak shaft! I guess I should find out, huh?

-Tim.


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Dave M
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Reged: 08/03/04

Loc: Ohio
Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951908 - 07/02/13 07:02 PM

Woops! i didnt even think about it not having a guider port.
Sounds like you have a good plan though..


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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: Dave M]
      #5951916 - 07/02/13 07:09 PM

Well I do hate guiding manually! At least if I use a camera I can be reasonably comfortable while I guide!

I'm still trying to find software to let me control the Panasonic GF3 camera from the laptop. It has a decent live view mode that would probably work if there was software to control it via the USB cable, like for the Canon.

I have a DSI Pro III camera I'd like to use as well, since I added a manual shutter and orion filter wheel to it. But I checked and it won't fit the Tak adapters, and the 1 1/4" eyepiece adapter puts it to far out to reach focus - unless I use a barlow. But then, I've got a bigger guiding problem.

-Tim.


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Dave M
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Reged: 08/03/04

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Re: Tak Epsilon 130 in the dark! new [Re: tim53]
      #5951933 - 07/02/13 07:19 PM

Dont you just hate when one solution creates another problem

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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Tak Epsilon 130 in the dark! new [Re: Dave M]
      #5952336 - 07/03/13 12:12 AM

K, so tonight I rigged up at my wife's archaeo site south of town, so the students could take a look at some faint fuzzies.

Figures though. When my wife came to the house to get cleaned up, she said everybody was waiting for me. But as I was setting up, they were heading in to the bar in town.

No worries. It's a wonderful night out. Clouds to the north again and a big fire in the Black Mts to the southeast (might be a controlled burn). At least the smoke is t blowing this way!

Back to setting up.


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