Joe Bergeron
Vendor - Space Art
Reged: 11/10/03
Posts: 1446
Loc: Upstate NY
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I tried Adhara from Winter Star Party for the first time last week. It split fairly neatly with my 92mm scope at 120X. Still no sign of the Pup with that scope though.
I also tried Propus (Eta Geminorum) at 220X. The star image was perfect and unwavering, but I had no convincing sightings of any companion.
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Eight telescopes of a highly diverse nature.
At home beneath the night sky.
My Web Site
English Lessons for Amateur Astronomers
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John Miele
Carpal Tunnel
Reged: 05/29/05
Posts: 1588
Loc: North Alabama
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I tried with a C11 on a fairly steady night 3 weeks ago and had no luck. I'm at 34 deg. N lat. Anybody think a C11 can pick out the pup? Has anyone else done so (using a C11)? Thanks.
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G11-GI w/ Ovision Worm
Edge 8 SCT
ST-402ME
QHY5-II/ST-80
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cvedeler
Carpal Tunnel
Reged: 12/20/05
Posts: 2203
Loc: Scottsdale, AZ
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No pup tonight. The seeing is poor. The out of focus view of Sirius shows an almost boiling atmosphere at 240x. I tried Sigfried's square mask, but it made things look worse. I'll have to wait for a better night.
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Chris Vedeler
Astro-Physics 160EDF
Astro-Physics 900GTO
Q453HR / QHY8 CCD camera
Canon 450XSi
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www.aznightsky.com
Scottsdale, AZ
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Ziggy943
Post Laureate
Reged: 08/11/06
Posts: 3060
Loc: Utah
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Quote:
No pup tonight. The seeing is poor. The out of focus view of Sirius shows an almost boiling atmosphere at 240x. I tried Sigfried's square mask, but it made things look worse. I'll have to wait for a better night.
The square mask is not magic. It can't overcome a bad night. Even with the mask the #1 criterion is a very good night. By that I mean a night where the Pup would be just out of reach without the mask. If Sirius is "boiling" I don't care what you use, you won't see it. The mask I have found just gives you a slight edge on nights where you think you should be able to see it anyway.
A square mask will produce 4 spikes from the star, a six sided mask will produce 6 spikes. The spikes from each side actually go all the way across. Parallel sides are superimposed on each other.
Try again but pick a better night.
I have my mask within an inch of the lens, i.e., sitting on the lens-cell. I think that might help.
Edited by Ziggy943 (02/25/07 05:21 PM)
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amirab
super member
Reged: 03/03/04
Posts: 195
Loc: Israel
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last night was the first time I had a clean seperation of the pup. It was so obvieuos I rose my had from the telescope to check if I was not looking at rigel by mistake . I was using a perfectly coolimated SCT 8 with Nagler 17 mm type 4. Later that night It was invisble again as seeing got worse.
Amir.
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Amir
AT-111 APO TRIPLET
TV Genesis- SDF
MEADE LX90 8' UHTC
MEADE STARFINDER 12.5' DOB.
APOGEE SA-88-RA BINO.
OBERWERK ULTRA 15X70
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ABC
sage
Reged: 10/22/06
Posts: 422
Loc: Heidelberg, Germany
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Quote:
last night was the first time I had a clean seperation of the pup. It was so obvieuos I rose my had from the telescope to check if I was not looking at rigel by mistake . I was using a perfectly coolimated SCT 8 with Nagler 17 mm type 4. Later that night It was invisble again as seeing got worse.
Amir.
Thatīs wonderful and admirable, especially wit a SCT 8, but I believe it at once. At best seeing it is not very difficult to see the pup with superb optics, in particular because separation is now 7.4", increasing. Most importantly, you have used a rather low magnification (118x); that is what I always recommend.
BTW, itīs always a special event to clearly see the pup.
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Kind regards, Christian
Meade 178 ED
Meade 152 ED
Intes Micro Alter M500
Bresser 70/700 Achromat
CGE
EQ-6
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ozzie
super member
Reged: 10/04/05
Posts: 136
Loc: Panama City, Panama
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While looking at sirius near zenith from my locaktion I barely saw a very dim star at about 4'o clock of sirius using a 3.2mm TMB/BO planetary eyepiece thats sirius B?
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Zhumell 10" Dobsonian
Bushnell 10 x 50 Binoculars
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ABC
sage
Reged: 10/22/06
Posts: 422
Loc: Heidelberg, Germany
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Yes, Sirius B currently appears at 4īo clock when using a diagonal (90° prism or mirror) adjusted in parallel to the horizon.
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Kind regards, Christian
Meade 178 ED
Meade 152 ED
Intes Micro Alter M500
Bresser 70/700 Achromat
CGE
EQ-6
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John Fitzgerald
In Focus
Reged: 01/04/04
Posts: 2709
Loc: AR
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ABC- Have you tried to split Procyon? Please give us a report. Thanks.
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ABC
sage
Reged: 10/22/06
Posts: 422
Loc: Heidelberg, Germany
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Quote:
ABC- Have you tried to split Procyon? Please give us a report. Thanks.
Procyon is about 0.35mag/10.3mag; sep 4.6".
Thatīs impossible for my scopes. I suppose a very good 8"-10" refractor or a very good 12" Newt is required for separating Procyon.
Of course, I have often tried to glimpse Procyon B, but as expected, it was not successful.
Can anyone please provide the recent data for Procyon (mags, sep, PA), thanks.
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Kind regards, Christian
Meade 178 ED
Meade 152 ED
Intes Micro Alter M500
Bresser 70/700 Achromat
CGE
EQ-6
Edited by ABC (03/12/07 05:41 AM)
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m0bius
member
Reged: 03/30/06
Posts: 49
Loc: Sacramento, CA
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Here's what I came up with...
Procyon AB:
(Feb 2007)
A = Mag 0.4
B = Mag 13
Sep = 2.56"
PA = 151°
Sounds rather challenging!
- Mike
Edited by m0bius (03/13/07 04:16 PM)
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asteroid7
Post Laureate
Reged: 10/19/04
Posts: 4273
Loc: CT
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Probably have to take my telescope, hop on the next flight
to "where no man has gone before" to spot this pair
Rich
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Clear Nights "Make My Day"
4.5" f/7 APM (TMB) APO Refractor CG5 GoTo with Orion extension tube
8" Celestron CPC (two)
Eyepieces:
40mm Pentax; 24mm Tele Vue Panoptic, 18mm Tele Vue Radian, 18mm HD Ortho, 15mm Celestron Omini,14mm Pentax,10mm Tele Vue Radian, 7mm,5mm & 3.5mm Nagler; 7.4mm Tele Vue Plossl.
2.5 Tele Vue Powermate
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ABC
sage
Reged: 10/22/06
Posts: 422
Loc: Heidelberg, Germany
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Procyon B was discovered in 1896 by John Martin Shaeberle using the 90 cm Lick Refraktor...
I suppose we will have no chance with our small instruments 
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Kind regards, Christian
Meade 178 ED
Meade 152 ED
Intes Micro Alter M500
Bresser 70/700 Achromat
CGE
EQ-6
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Bonco
Post Laureate
Reged: 04/17/06
Posts: 3036
Loc: Florida
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Speaks well for the optics available in the 19th century.
Bonco
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RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm (Carton)
Towa 339 Restored (Carton)
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Catapoman
Pooh-Bah
Reged: 06/06/03
Posts: 1087
Loc: VA
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Quote:
I tried with a C11 on a fairly steady night 3 weeks ago and had no luck. I'm at 34 deg. N lat. Anybody think a C11 can pick out the pup? Has anyone else done so (using a C11)? Thanks.
I had a fairly (6/10) decent night last night, certainly the best I've had this yearso far. I took out my NX11GPS with hopes of getting a glimpse of the 'Pup'. While I had no trouble splitting Adhara, Rigel and Beta Mon - the pup still eluded me. This is one tough cookie to crack, nevertheless I'll keep trying.
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A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.
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starramus
Pooh-Bah
Reged: 09/01/04
Posts: 1124
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Quote:
Personally, I myself find Rigel fairly easy, but have never seen Sirius B. 42°N
edz
I don't believe there has ever been an instance where I couldn't split Rigel, but likewise have never observed Sirius B. Sue French's fortuitous success with the ten inch was most likely due to the fantastic seeing experienced at the WSP. That laminar air flow coming in over that vast expanse of water has a remarkable settling effect on the atmosphere. Unfortunately I live on the leeward side of a mountain range so my skies are often roiling in turbulence. If i am ever to see Sirius B it will be after i have changed my location to more serene skies.
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Roger Ceragioli
member
Reged: 07/27/05
Posts: 91
Loc: Tucson, AZ USA
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For the record and whatever little it's worth, I tried several times more to see Sirius B, both with my 10" f/15 Houghton Cassegrain and my 145mm f/8 semi-apo, all made by myself. On several nights of very good seeing, I still saw nothing for sure.
Also, the 11" f/15 achromat mentioned in EdZ post (used by Barbara Wilson) was figured by me. Elsewhere on Cloudy Nights she expressed great pleasure with this lens.
None of this is to say that anyone else has NOT seen it. But I still have not to date, despite all my efforts, knowing where to look, having a decent latitude and nights of good seeing, and using low, medium, or high powers on scopes with excellent optics.
Cheers,
Roger Ceragioli
Quote:
The thread refeerenced above is
Eta Gem includes menntion of Sirius B
This Sirius B discussion caused me to go re-read a number of posts on another forum. Interesting to note: in general, those who saw Sirius B were using magnifications in the range of 300x to 500x; Observers reported dropping down to low powers in the range of 300x-350x;
It was observed at 350x just outside the 3rd diffraction ring in an 11" f/15 by Barbara Wilson; same night of exceptional seeing, it was reported seen in a 4" Tak;
It was reported seen from Lat 24°N by Sue French at WSP in a 10" mirror at 320x outside the diffraction rings and verified by several other observers, and on the same night also visible in a TEC155mm at 400x.
A suggested test is Rigel B
Sirius AB: mag -1.5 and 8.5 separation 7.4" PA 102 (2007).
Rigel AB: mag 0.3 and 6.8, separation 9.4", PA 204 (2005)
One observer reports while he can see Rigel, never having been able to see Sirius from 57°N.
Personally, I myself find Rigel fairly easy, but have never seen Sirius B. 42°N
edz
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ronharper
Carpal Tunnel
Reged: 02/14/06
Posts: 2065
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Hi Roger,
This is terrible! Seriously, it takes the luck of the gods to get the required seeing, and without that, even a Ceragioli original doesn't stand a chance. Tell me, when did you last see the third diffraction ring in an 11" scope?
By the way, wouldn't you say the third ring of an 11" scope is not just, but way, inside the recent 6-7arcsec separation of the Pup?
Anyhow, good to hear you slammed on Sirius another season, that's all you can do. (I'll assume that in the course of not seeing B you saw a heck of a lot of other great stuff.) No luck here, either, but, hey, I can die happy already!
Ron
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Greg Stone
super member
Reged: 04/29/06
Posts: 174
Loc: Southeastern New England
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Question: How do you "prove" that you saw it? I'm not interested in convincing others on this forum or elsewhere - I'm interested in convincing myself. Like others reporting here, I have never seen it - though I find Rigel an easy split some nights, even in an 80mm.
A lot of time I do my double-star observing while purposefully keeping myself ignorant of things, such as position angle. Then if I sketch what I see and my sketch is reasonably accurate in terms of position angle and separation, I have confidence that I did indeed see what I thought I saw. I still can't prove it to you (that sounds next to impossible to me) but I can prove it to me, and that's goal enough.
But I know the PA, separation, etc. of Sirius B and I can't forget it, so when conditions are borderline and the Pup - as one report stated - keeps peeping in and out - how do I know I'm seeing it?
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http://astrojourney.wordpress.com/
http://bestdoubles.wordpress.com/
http://gooseberryjournal.wordpress.com/
10X30IS Canon, 15X50IS Canon binos; 50mm Sparrow Hawk, 50mm Tasco, RV-6 Dynascope, TeleVue 85, C6 SCT, LT-8 ACF, Lunt 35mm solarscope,
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Bonco
Post Laureate
Reged: 04/17/06
Posts: 3036
Loc: Florida
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Quote:
Question: How do you "prove" that you saw it?
After looking for many hours on different viewing sessions when I finally saw it, I knew almost instantly it was a valid observation. Mainly because it was a difinite dim but solid spot, not a spurius wavering reflection that came and went. Knowing its PA helped confirm the sighting as the Pup was exactly where it was supposed to be.
Cheers, Bonco
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RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm (Carton)
Towa 339 Restored (Carton)
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