planet mars is coming=which lens, film etc.

papisa

Member
Joined
Dec 16, 2005
Messages
56
Format
35mm
The planet Mars will be here from Aug. 22 to the 27, it will be the closest to earth than it has ever been. Just look up mars in august.
The only two lens i have are FD50mm 1:18 SC and a FD24mm 1:2.8 SSC, i have a Canon AE-1 old one SLR.
Film=100, manual setting, set to bulb, lens setting to F/11 or F/16, open the shutter like maybe 10 to 20 seconds, i used this for shooting fireworks. Any other ides for this on what to do or use, could not find out how fast it will be moving.
Thanks, Mike.
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,244
Location
Bergen, Norway
Format
Large Format
You need a whopping big telescope anyway. Even a 1000mm will only show it as a small dot!

It moves at just about the same speed as everything else in the sky: 15 degrees per hour, as the earth rotates.
 

Tom A

Member
Joined
Apr 28, 2005
Messages
148
Location
Moen, DK
Format
Multi Format
THAT is some very very old news!!!
It was back in August 2003 that Mars was closer to earth than it has ever been. At this moment Mars is almost at the opposite side of the Sun as seen from earth, and Mars would not be back in the nigth / evening sky until summer 2007.

If you want to photograph Mars, you will need at large telescope - Last time I photographe Mars, I did it with at 25 cm telescope and a focallength of approximatly 30 meter, even then Mars was only 2 mm across.

Tom
 
OP
OP

papisa

Member
Joined
Dec 16, 2005
Messages
56
Format
35mm
Old news equals the correct news now.
Earth is catching up with Mars that will be an encounter that will Culminate its Closest approach between the two planets in recorded history.
The next time mars will be this close is in the year 2287. Astronomers can be only certain that mars has not come this close to earth in the last 5000 or maybe 60,000 years before it happens again.
Mars will be within 34,649,589 miles to earth and will be next to the Moon, the brightest object in the sky, it will appear in 25.11 arc seconds wide and it will attain a magnitude of -2.9.
Mars will look as large as the full moon to the naked eye.
No one Alive Today will ever see this again.

Mike.
 

Leon

Member
Joined
Dec 1, 2003
Messages
2,075
Location
UK
Format
Medium Format

Mike - I suggest you read this:

http://urbanlegends.about.com/library/bl_mars_encounter.htm

and this

http://www.space.com/scienceastronomy/050708_mars_hoax.html
 

uraniumnitrate

Member
Joined
Jun 30, 2006
Messages
283
Format
Multi Format
Any planetary observatorium around you? That would be your sollution! nice detail rich image and you don't had to enlarge!
 

Jim Jones

Subscriber
Joined
Jan 16, 2006
Messages
3,740
Location
Chillicothe MO
Format
Multi Format
papisa said:
. . . Mars will look as large as the full moon to the naked eye.
No one Alive Today will ever see this again.

Mike.
Click to expand...


At least this may prove to be true, if we send a manned expedition to Mars.
 

Lee L

Member
Joined
Nov 17, 2004
Messages
3,281
Format
Multi Format
Sorry, but this is dead wrong, and comes from an old, undated memo that's still circulating the internet and gets rehashed every year at this time since 2003 by people who don't check the facts.

The info you have is for 2003. Mars will be opposite the sun from earth this August, nearly as far away as it gets, and near the sun in the sky, so it will only be on the western horizon for a very short time during twilight in late August this year. In 2003 it was around 40 arcseconds in diameter. Late this August it will be 3.5 arcseconds in diameter, which is less than 1/1000 of one degree in diameter. No observatory near you will show any detail on Mars at this distance and apparent size. Mars will be 242 million miles away on Aug 25th, not 35 million.

In other words, this August is close to the worst possible alignment for viewing Mars.

Lee
(intro college astronomy lab instructor and observatory manager)

P.S. Mars at its closest approaches is about 25 arcseconds across, the moon is always in the neighborhood of 1800 arcsecond across. Mars is never more than approximately 1/72nd the diameter of the moon. Don't believe everything you read on the internet, even on APUG. (Even if I type it.)
 
Last edited by a moderator:

Carol

Member
Joined
Mar 10, 2003
Messages
327
Location
Australia
Format
35mm
Sadly this has become an annual hoax and does nothing to stimulate interest in the universe. It just makes people feel silly for getting caught out by it. What a shame.

On the other hand, tonight we had Jupiter 4 deg. from the 1st Quarter Moon. Now that's beautiful.
 

srs5694

Member
Joined
May 18, 2005
Messages
2,718
Location
Woonsocket,
Format
35mm
papisa said:
Mars will look as large as the full moon to the naked eye.
Click to expand...

Others have dealt with aspects of the broad claim, but I'd like to just hammer this one home: Mars will never "look as large as the full moon to the naked eye" from the surface of the Earth, short of major disruptions to planetary orbits (and that seems improbable, even over geological periods of time). Mars is bigger than the Earth's moon, but even at its point of closest approach, it's so much farther away that it's dwarfed by the moon. As others have said, the only way you're ever likely to get anything more than a red speck from a photo of Mars is to use a very big telescope -- that or get assigned to a NASA Mars mission.
 

Lee L

Member
Joined
Nov 17, 2004
Messages
3,281
Format
Multi Format
papisa said:
The only two lens i have are FD50mm 1:18 SC and a FD24mm 1:2.8 SSC, i have a Canon AE-1 old one SLR.
Click to expand...
Mike,

Just ran the numbers. In late August 2006, if you use your longer lens, the 50mm, Mars will be about 0.009 mm diameter on the film. So if you do a 100X enlargment of the negative to a print, Mars will be almost 1 mm diameter on the print. I suspect it will appear larger than that unless you have a very good sample of the FD 50mm and use extremely high resolution film with great antihalation characteristics.

I'm writing this not to be facetious, but to try and get the facts across. Let me know if you want pointers to good information on astrophotography. It can be great fun if you have realistic expectations and understand what you're doing. And a lot can be done with a simple camera setup such as yours.

Lee
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,244
Location
Bergen, Norway
Format
Large Format

In the original memo was a short sentence which seems to have got lost somewhere:

"Mars seen through a 75x telescope will look as large as the moon to the naked eye".

But that was in August 2003, as has been repeatedly pointed out.
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,244
Location
Bergen, Norway
Format
Large Format
Markok765 said:
Pentax spotmatic with 1000 F8 super takumar with 2 2x enxtenders
Click to expand...
And a good tracking system - exposure will be LONG at f:32.

A decent reflector telescope is far cheaper and better - and often includes a good tracking system.
 

Lee L

Member
Joined
Nov 17, 2004
Messages
3,281
Format
Multi Format
Ole said:
In the original memo was a short sentence which seems to have got lost somewhere:

"Mars seen through a 75x telescope will look as large as the moon to the naked eye".

But that was in August 2003, as has been repeatedly pointed out.
Click to expand...
Ole,

Very true, but somehow the qualifying information about comparing a relatively high power telescope view to a naked eye view is always dropped in the insidious versions that get propagated year after year.

Here's a link to some facts about the 2003 close approach: http://www.badastronomy.com/bad/news/marsattacks.html
Which prompts me to correct something I posted earlier about 2003: Mars was only 25 arcseconds in diameter, or 1/72 the diameter of the moon, at its closest approach.

Lee
 

Markok765

Member
Joined
Apr 26, 2006
Messages
2,262
Location
Ontario, Can
Format
Medium Format
do they cover 35mm? and can you mount a camera on it? you will also need specialized mounts i think. what F number are mosy telesocpoes?
 

naturephoto1

Member
Joined
Mar 26, 2006
Messages
1,960
Location
Breinigsville
Format
Multi Format
Markok765 said:
do they cover 35mm? and can you mount a camera on it? you will also need specialized mounts i think. what F number are mosy telesocpoes?
Click to expand...

Marko,

Speed of the telescope will depend on the particular model- common sizes include an 8" folded mirror design such as a Celestron or a Meade. You will need an adapter for the camera in question. Adapters are available for most 35mm cameras and are a T type of mount. They should cover 35mm.

Rich
 

Ole

Moderator
Moderator
Joined
Sep 9, 2002
Messages
9,244
Location
Bergen, Norway
Format
Large Format
Most telescopes can be adapted to cover just about every conceivable film size from subminiature up to at least 8x10" plates.

And for most SLR cameras, there are adapters which fit a standard ocular (they're quite standardised as to diameter).

SLRs are not the best choise, especially if the camera has no mirror lock. Although I must admit that I've shot several thousand microscope pictures (similar setup and problems) with a fully automatic no-mirror-lock Pentax ME.

F-number depends on lots of things, and tends to increase with price and size and decrease with magnification
 

Christopher Colley

Member
Joined
Jan 24, 2005
Messages
279
Format
Multi Format
I remember the 2003 event, it was nice to see.

mars was what looked like a red star to my poor vision.. a red speck that was obviously red... but nothing more..

kind of cool but not life changing
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…