Custom Search
Over 9,000 pages indexed!
Your Host
Click here to read about RF CafeKirt
Blattenberger

... single-handedly
redefining what an
engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding business website - lots of info

Doggy Dynasty:
My son-in-law's dog training business

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<
Job Board
About RF Cafe©
RF Cafe E-Mail
Product & Service
Directory
Engineering
Jobs
Personally Selected
Manufacturers
Employers Only
(no recruiters)
Comet Lulin - Barely There - RF Cafe Forums
Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Comet Lulin - Barely There
Posted: Tue Feb 24, 2009 12:01 am 
 
Site Admin
User avatar

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 451
Location: Erie, PA
Greetings:

For reasons only an astronomer (professional or amateur) would understand, I got in the car at around 9:00 pm and drove to an open field around 25 miles south of Erie, PA. The glow of the Erie city was north of the ridge that runs along I90 as I chose an ice-covered hilltop from which to hunt for and hopefully photograph comet Lulin.

http://www.skyandtelescope.com/observin ... 92534.html

Clear skies in Erie are rare enough that the trip was worth the effort. Melanie braved the 13 degree air to ride along with me, although she wisely remained in the car with the heater running whilst I got out to do my comet viewing. 
 
Astronomy websites advised that Lulin should be visible with the naked eye. Maybe someone with better eyesight than me could see it, but it required the assistance of my 7x35mm binoculars to find it. Fortunately, Lulin's position near a readily identifiable group of stars at the rear of Leo, and especially with Saturn's presence, made finding the fuzzy blob easy enough.
 
The Minolta and tripod were nearby for an attempt to photograph Lulin, but since its timer will only keep the "shutter" open for 60 seconds, and because the comet was so faint, I figured it would not be worth the trouble. I'll have to leave the breathtaking images to the people with real motorized telescopes and cameras built for the job.
 
Image

_________________
- Kirt Blattenberger :smt024
RF Cafe Progenitor & Webmaster




Posted  11/12/2012

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

A Disruptive Web Presence

Custom Search
Over 9,000 pages indexed!
Read About RF Cafe
Webmaster: Kirt Blattenberger
KB3UON

Product & Service Directory
Personally Selected Manufacturers

RF Cafe T-Shirts & Mugs
Calculator Workbook
RF Workbench
Please Support My Advertisers