7 Discussions and CommentsMember since April 2, 2010oxhill,
United Kingdom
Hi everyone.
I have recently procured the PPC 5022-13, fascinated by its technology as well as its looks etc. However I have a question for other owners or those in the know. The question related to new moon and full moon, I think I saw an issue with my watch at full moon (26July) and now want to clarify it as new moon arrives.
The watch is brand new, only 1 month old.
At the full moon on 26th July I was expecting the moon to be directly in the centre of the PPC moon phase. After scrutiny through a magnifying glass I noted that it was not exactly in the centre, it was slightly offset to the left, maybe my 0.5 to 1 mm. I did not want to split hairs but noticed this nuance; sadly I was no0t at home on the 27th to see whether the moon was running 1 day behind.
Tomorrow August 10 is new moon date at 03:10am to be precise, so I expect not to be able to see the moon on the day. In addition, according to my research there should be no moon today (9th) or weds (11th) however, today I can see a fraction of a mm of moon protruding.
Any other PPC owners online? Can you tell me if you can see any moon phase on your dial today 9th?
Any other comments warmly appreciated - moderator pls move to other thread if I am on the wrong forum
Simply stated the moonphase easily can be "off" by a fraction of a millimeter. The calibration is quite fine given an accuracy of over 570 years which means that there's extremely fine gearing (see for example http://www.iwcforum.com/Articles/2003/KlausText.html)/
Given that accuracy the moonphase could be set slightly off when viewed under a magnifying glass or loupe. If that bothers you, ask to see if the calibration could be finer when you next have service. It really shouldn't affect your use.
3,733 Discussions and CommentsMember since March 28, 2001
As I understand, the moon on the watch progresses once a day, at my watch at 00:15. In my opinion that leaves the possibility of the moon not being 100% centered at the full moon day every time. However, it will show full moon as exactly as possible within this parameter for more than 100 years. That is good enough for me, giving the name perpetual a slightly different meaning.
1 Discussions and CommentsMember since Aug. 24, 2010
I have a similar problem with my Spitfire Chronorgaph, although perhaps not as technical as that of the timepiece being discussed here. I have owned my watch for almost 3 years now and the minute indicator part of the chronograph sits off centre when resest. It rests between 29 minutes and 0 minutes when it should be resting on 0 and is thus clearly visible to the naked eye.
Is this merely a calibration issue that can be resolved? To be honest I have never really minded it as it adds some individuality to the timepiece, but I would be interested to know what the issue is and if/how it can be resolved.
2,081 Discussions and CommentsMember since Jan. 7, 2005
[quote=]I have a similar problem with my Spitfire Chronorgaph, although perhaps not as technical as that of the timepiece being discussed here. I have owned my watch for almost 3 years now and the minute indicator part of the chronograph sits off centre when resest. It rests between 29 minutes and 0 minutes when it should be resting on 0 and is thus clearly visible to the naked eye.
Is this merely a calibration issue that can be resolved? To be honest I have never really minded it as it adds some individuality to the timepiece, but I would be interested to know what the issue is and if/how it can be resolved.
Many thanks,
Ed[/quote]
To my little experience it may depend on several causes.
First thing I would do is to check the correct positioning of the hand. This problem can be also caused by a malfunction of the pusher (doesn't strike the hammer correctly, due to a short run, this is the case happened to me with a Valjoux 72). Always the hammer may not work properly extending the impulse to the second-counter wheel. In any case I would take the watch to a watchmaker for service or repair. It shouldn't be such a great issue to fix. This is just my humble opinion, let's wait for the experts.
3,742 Discussions and CommentsMember since March 22, 2001
I think you have your answers. The moonphase is highly accurate to 1 day within 577 years - or .00000474%. There are a couple factors...1. The moonphase is defined at GMT not your local time zone, and 2. The moon disc advances once per day at midnight, not constantly throughout the day. So, it will never display and exact full moon - just as the actual moon is only full in the sky for a brief moment.
3,742 Discussions and CommentsMember since March 22, 2001
Oh, I forgot that I had this animation that I shot of my Portuguese Perpetual 5022 - it's a loop of the moon phases. Hope this does not beat this topic to death - but I think it's a descent question you have.
Your watch is working perfectly.
Just so you know, the moon phase display never ever displays exactly at 90-degrees (centered) for a full moon. It is slightly off-center as you observed.
Again, just as the ACTUAL moon in the sky is always in motion - it is only 100% full for a brief moment. Even though our calendars indicate the date that a full/new moon occurs - the moon is not technically full for the entire day. Your IWC's date advance (including the moon disc) occurs only once per day at midnight. The gear train/ratios are so accurate that your moon display will only become one-day deviated from the true moon phase in 575 years from now. That is the most impressive you will find on the market.
I have recently procured the PPC 5022-13, fascinated by its technology as well as its looks etc. However I have a question for other owners or those in the know. The question related to new moon and full moon, I think I saw an issue with my watch at full moon (26July) and now want to clarify it as new moon arrives.
The watch is brand new, only 1 month old.
At the full moon on 26th July I was expecting the moon to be directly in the centre of the PPC moon phase. After scrutiny through a magnifying glass I noted that it was not exactly in the centre, it was slightly offset to the left, maybe my 0.5 to 1 mm. I did not want to split hairs but noticed this nuance; sadly I was no0t at home on the 27th to see whether the moon was running 1 day behind.
Tomorrow August 10 is new moon date at 03:10am to be precise, so I expect not to be able to see the moon on the day. In addition, according to my research there should be no moon today (9th) or weds (11th) however, today I can see a fraction of a mm of moon protruding.
Any other PPC owners online? Can you tell me if you can see any moon phase on your dial today 9th?
Any other comments warmly appreciated - moderator pls move to other thread if I am on the wrong forum
Paul
Given that accuracy the moonphase could be set slightly off when viewed under a magnifying glass or loupe. If that bothers you, ask to see if the calibration could be finer when you next have service. It really shouldn't affect your use.
Good luck.
Regards, Michael
mfriedberg@iwcforum.com
Last edited: 5 April, 2012 - 19:53
Kind regards,
Paul, wearing nicely glowing perfection
What you do may not be so important, but it is very important that you do it well. (my variation of a saying by Gandhi)
Last edited: 23 October, 2011 - 13:31
Is this merely a calibration issue that can be resolved? To be honest I have never really minded it as it adds some individuality to the timepiece, but I would be interested to know what the issue is and if/how it can be resolved.
Many thanks,
Ed
Is this merely a calibration issue that can be resolved? To be honest I have never really minded it as it adds some individuality to the timepiece, but I would be interested to know what the issue is and if/how it can be resolved.
Many thanks,
Ed[/quote]
To my little experience it may depend on several causes.
First thing I would do is to check the correct positioning of the hand. This problem can be also caused by a malfunction of the pusher (doesn't strike the hammer correctly, due to a short run, this is the case happened to me with a Valjoux 72). Always the hammer may not work properly extending the impulse to the second-counter wheel. In any case I would take the watch to a watchmaker for service or repair. It shouldn't be such a great issue to fix. This is just my humble opinion, let's wait for the experts.
Regards,
Roberto
Regards,
Roberto
Last edited: 11 January, 2013 - 11:07
Regards,
Ardoise
Last edited: 1 January, 2012 - 17:55
Your watch is working perfectly.
Just so you know, the moon phase display never ever displays exactly at 90-degrees (centered) for a full moon. It is slightly off-center as you observed.
Again, just as the ACTUAL moon in the sky is always in motion - it is only 100% full for a brief moment. Even though our calendars indicate the date that a full/new moon occurs - the moon is not technically full for the entire day. Your IWC's date advance (including the moon disc) occurs only once per day at midnight. The gear train/ratios are so accurate that your moon display will only become one-day deviated from the true moon phase in 575 years from now. That is the most impressive you will find on the market.
Best regards,
... and congrats on your fine watch.
Regards,
Ardoise
Last edited: 1 January, 2012 - 17:55