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First Tries M3, M44, M94

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#1 AstroMan0

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Posted 29 April 2013 - 08:02 PM

Here are my first tries at M3, M44, and M94. The M94 exposure was about 10 minutes, as well as the exposure for M3. The exposure for M44 was only a few minutes. I have a longer exposure, but it was a little overexposed from the light pollution. I wanted to use my red filter on M94, but it was close to midnight, and I wasn't up for the hour-long exposures necessary. I am quite pleased with the result for M3; though a little bit trailed, I got a lot of stars, and even a little background galaxy! I hope to get outside tomorrow night for some longer exposures, maybe on M109. I have some film I hypered for use on the weekend, though the weather didn't cooperate.

Clear skies,
Noah

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#2 AstroMan0

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Posted 29 April 2013 - 08:03 PM

Here is M44.

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#3 AstroMan0

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Posted 29 April 2013 - 08:04 PM

And M94.

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#4 Nebhunter

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Posted 29 April 2013 - 08:24 PM

Noah - it makes me warm inside to read about you and the enjoyment from this hobby with film. Just when I think it's getting stale - up pops Noah and his efforts. Good going - experiment with those filters - hyper that film and enjoy life. Just make sure you continue to share that excitement.

igor

#5 THEPLOUGH

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Posted 30 April 2013 - 06:16 PM

Great images there Noah,keep them coming... :like:

#6 Michal1

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Posted 03 May 2013 - 05:02 PM

Considering you've started less than one year ago, I must call it a rocket speed advance. I only hope we will be able to see better scans of your photos one day, they must be great. I guess the lumpy structure is not visible on your prints. Clear skies to you Noah!

#7 AstroMan0

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Posted 03 May 2013 - 05:32 PM

Thanks for the compliments! Michal, believe it or not, that lumpy structure does appear on the prints, and on the negatives. I was informed by Robert Provin that it was a classic case of too much moisture in the film while hypering, and that I should pull a vacuum for longer, and do the process on a reel rather than in the canister. I have tried this, and the uneven fog has not disappeared, though it may have lessened, by how much I cannot yet tell. I am thinking that a ton of moisture could have gotten into the emulsion due to my mistake of storing the bulk roll in the freezer after opening it. There was some pretty heavy condensation when I took it out, and I am worried that it may have had a harmful effect on the film. I hope that it has not permeated the whole roll, but if it has, I have another new roll, and there are still many more out there.

Noah

#8 Nightfly

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Posted 03 May 2013 - 05:33 PM

A nice contribution to the forum Noah. Messier 3 looks wonderful as does M44.

I hope we will see more of your work.

#9 Michal1

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Posted 03 May 2013 - 06:12 PM

Sorry, now I recall you've said it earlier. Maybe heating the film before hypering could help?

#10 AstroMan0

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Posted 03 May 2013 - 08:01 PM

Good idea Michal-maybe the moisture would vaporize faster. I guess I have nothing to lose!

Noah

#11 TxStars

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Posted 03 May 2013 - 10:58 PM

My hypering steps. (YMMV)
1) Warm hypering chamber 80 deg F.
2) Place film on reel.
3) Place reel in hypering chamber.
4) Purge with Nitrogen.
5) Draw vacuum.
6) Add Nitrogen (14-15 psi) let sit 2 hrs.
7) Repeat steps #5 & #6 three times.
8) Purge with Hydrogen.
9) Add Hydrogen (14-15 psi) let sit ~7 1/2 hrs.
10) Purge chamber with Nitrogen.
11) Remove film and freeze in Nitrogen filled Zip-lock bag.
12) Open bag and expose asap after removing from bag.
13) Develop ASAP after shooting.

*Notes
a) Reel is what can be shot in one night.
b) Better vacuum and pure Nitrogen helps remove moisture.
c) Purge chamber 1 min
d) Pure gas seems to give more even results.
e) Hypering time will change depending on film.

#12 AstroMan0

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Posted 04 May 2013 - 08:15 AM

Thanks for the tips!
I think I am going to have to get some nitrogen, but I'd like to avoid getting pure hydrogen due to its explosive nature. I mentioned getting it to my mom once, and she was strngly opposed to this idea. Do you have adjusted times for 8% forming gas? My process now consists of two days in a 27 inch vacuum at room temperature, and two days in forming gas at about 50 degrees Celsius at 3 psi, but at this point I am willing to try almost anything to get rid of this uneven fog. Do you think that it could be caused by storage after hypering? Sometimes I just leave it at room temperature for a day or two after hypering when the weather doesn't cooperate.

Noah

#13 TxStars

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Posted 04 May 2013 - 08:09 PM

Yes storage of film is important, moisture can kill all your hard work from hypering and shooting.
At minimum store film in the frig in a zip-lock bag with desiccant.
Sorry I don't have any times for forming gas.
If I remember correctly you are currently close to the starting times Lumicon listed for 2415 back in the 80's.

#14 AstroMan0

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Posted 04 May 2013 - 08:32 PM

Is storage of hypered fim in a vacuum a viable option? I haven't found any information at all about such storage. Would this somehow desensitize the film? Also, do you think that improper storage after hypering could cause the uneven fog, or even exposure to moisture during the actual exposure?

Thanks for all your help!

#15 TxStars

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Posted 05 May 2013 - 01:37 AM

You could get the fillm "too dry" perhaps but it would not desensitize it.
Dry film under dry conditions can lead to "lightning strikes" when advancing the film too quickly in the camera.
Always move the film advance lever slowly.

Film hypered or not is best kept cool and dry.

Once you hyper your film any moisture or excess heat will begin to degrade the hypering you did. (Sorry it can only be hypered one time)

Storage in the frig or freezer in a dry bag/box/canister will give you about 7 days storage of hypered film.

Shooting film in a nitrogen purged camera body is a good way to keep it dry.


"Shooting film is an art form."
"Hypering & Shooting film is a test." :tonofbricks:

#16 Jeff Phinney

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Posted 05 May 2013 - 01:00 PM

For most folks, I'm sure it's a bit over the top, but If you can get your hands on a decent MarVac pump or something similar for a decent price, you should have better and more consistent results. With the film in the chamber you keep the pump attached and constantly running for several days slowly pulling the moisture out of the film without heating the film and raising the base fog. Be sure to have a vapor trap between the tank and pump.

#17 TxStars

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Posted 05 May 2013 - 05:56 PM

Yes the better the vacuum the beter the results.
I have a Welch 8915A DirecTorr V which will works great, but they are costly if you cant get one used.

#18 Jeff Phinney

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Posted 05 May 2013 - 07:08 PM

So you have a Welch pump that you use? Do you also have a gauge you use with it?

#19 TxStars

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Posted 05 May 2013 - 07:44 PM

I have not used it for hypering in about a year and did not bother with a gauge I just let it run for 1 hr. :crazy:






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