CONJUNCTIONS
Moon and Jupiter
20160224-04:04UT
Canon EOS 500D
10s, ISO 400
Peleng 8mm fish eye lens
Click to enlarge to 100%
Canon EOS 500D
1/500s, ISO 200 (Moon)
1/50s, ISO 200 (Jupiter)
Fluorite refractor Perl Vixen
FL= 900, FD= 8.8 on LXD75 mount.
This huge and detailed image is the combinaison of 2 real pictures superimposed
on a cleaned simulation (Stellarium).
Respective
sizes, distances and orientation are respected at best. Luminosity has been
enhanced for Jupiter satellites.
It is necessary to click on it and enlarge to 100% to get a good feeling of
the event !
(legend included)
20130218-daylight
-Canon EOS 500D
0.03s-ISO 200-F 420mm-FD18
6 Registax6 processed
click on picture for full size
20121226-0023UT
-ED80-F600mm-Canon1100D
-5ms-100 ISO
2x
Registax6 processes (one for Moon, one for Jupiter)
click on picture for full size
Venus, the Moon and Saturn
Very nice at early morning at Sotteville-s-mer,
France(20071007 0523 UT)
click on image for larger... or here
for detail (50mm)
Canon EOS 10D, 18mm F8, 8s exposure at 100ISO on a tripod
Venus and the Moon
20070321-1851 UT
Canon 10D on tripod, Auto mode without flash, 50mm
Moon and the Pleiades (click on picture for larger or here
for large FOV with Venus)
Canon EOS behind 100/500 Skywatcher refractor, mounted on LX200 12"
HIP 42705 passsing behind Saturn
rings !
Test on the 24 (seeing conditions rather poor)
Toucam Pro 2, B&W sensor on
LX200 12", 3x Televue barlow.
About 300 images registered in Registax 3 for clarity... but individual images
are OK too.
1- RED filter R25
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 |
For both objects : 5fps-gamma25-expo1/25s-gain75 |
2- Near InfraRED filter
 |
 |
For both objects : 5fps-gamma50-auto
mode |
3- Color test (Toucam Pro 2, IR-UV cut filter)
 |
 |
 |
LX20012p-B3x-TUCColor-g25-expo33-gain80 |
Same processed (Colors, stretching) |
|
|
| The Moon and Venus are looking
close together (03/24/2004 evening)
! Time Acceleration 600X*. The minute star left of Venus is Delta Aries, Mg4.3. It is the point of reférence for the animation. It is obvious that Venus moves very little and The Moon a lot ! Of course it moves East on the background of stars but at the same time plunges towards the horizon where it slowly disappears in the fog ! This natural darkening allow us to catch the main features visible on the crescent. Animation DIVX smaller than GIF but better in quality ! EXIF data :
Model : Canon EOS 10D (// on LX200, remote timer TC-80N3**
Canon )
*1 image every
5 min, showing here at 2fps. |
VENUS-JUPITER (in FULL DAYLIGHT
!)*
May 17, 2000
07H27 (FD 30) 08H00 (FD 10) 08H37 TU (FD 10) (
C8 at focal plane, Lumicon Ha Prominence Filter without
prefilter, Quickcam VC
a few images combined
See one band on jupiter on the middle image
11H00 UT
C8 , Trial with Barlow 3x Televue, Lumicon Ha Prominence Filter without
prefilter, Quickcam VC
30 images combined. Jupiter is the round "blob" at the left of Venus !
Process (done in many 3 min times in between clouds !!) :
As the conjunction was at a mere 7° W of the SUN, drastic precautions had to be taken !!
The Ha filter was put complete in front of the scope at the beginning, to safely focus on the Sun limb with my largest FOV eyepiece (40mm) , then the scope was manually turned towards Venus using RA-DEC circles (motorized GP-DX mount). After visual check for darkness at the eyepiece, the red prefilter was removed but not the opaque prefilter holder. Indeed this helps a lot avoiding glare by stopping down the C8 (F30) + cutting all lateral Sun reflections. Check with the hand against the eyepiece revealed no light. I approached my eye slowly from the side at a respectable distance from the eyepiece ...good, no bright light ! Venus was then found visually at the border of the field, centered, then via motorized focusing, dead-centered with a VC-parfocal 26mm eyepiece (made by adding some PVC tubing). Observation with the n.ked eye was very nice. One small light spot...and the second just nearby, so pale ! Then it was replaced by the VC for shooting. Removing the prefilter holder was then safe (a Sun reflection ring of light was visible on dust present on the side of the secondary mirror. Danger ! NO VISUAL anymore) and gave the first results above. Later I added a 3x Barlow just for the challenge !
* Last info : I got a mail (nicely in private) from Christel late in the evening of the 17th. She was upset because she could not understand that the two planets were so close in the early morning (compared with her planetarium software). I answered to her that the great shine of Venus probably "ate" the distance. There was no doubt in my mind.I did observed the same thing behind the eyepiece ! Jupiter was hard to see... as forecasted ! On the evening of the 18th I called Gilbert and told him. I had looked carefully on Guide7. No object around could have create confusion. If it is not Jupiter it is what ? And soon Gilbert says " a reflection" ! Arrrgh ! I think right away that this is a possibility, as there was the H alpha filter in line ... I do some measurement on the images and the distance stays constant ! Conclusion : this story was an unintended joke ! Jupiter was the pale reflection of Venus ! And I believed seeing a band on the planet !!
The omnipresence of clouds made me work in a hurry. Blue sky was all but absent ! BTW even if the weather had been nice, I am not sure I would have seen the problem ! Indeed the reflection had the good shape for a faraway Jupiter during daylight ! During the short periods of clear sky (may be 4 times five min during the day) I had just the time to look at the eyepiece, center and focus before putting the webcam. Moreover -so funny - I felt obliged to add a 3x Barlow at 11h UT expecting a better image ! If I had not done it, maybe I would have seen Jupiter, not far away at that time ! In any case it was like, but was not an April fool story ! I was the first caught !! I do hope that you will read this "amateur story" with a smile !
And if it was really Jupiter ? I will soon (hopefully... If the Sun is coming back) do the same setup with Venus ONLY !
I left the previous images and text hoping there is something to learn from it !
Moral :
If
something troubles you ...tell it ...softly !! Thank's Christel !!
& take care of reflections
!
BTW I remember a few years ago spending time and efforts to focus on my video camera an internal reflection of the Moon ! One never learns ?
At last two words :
· The most invisible lye is the one
dissimulated in 99% of true !
· What you see is what you believe
!
Texts and images of this web site all Copyright S. Weiller, 1999-2013
Permission granted to copy them for non commercial use
