Vinyl Distorion Towards Center

Distortion in corner of image posted in beginning and intermediate imaging.

Vinyl distorion towards center.

Sirs i am a newby to astrophotography and to say the least the learning curve has been steep i am still working out a number of issues however i have one issue that i can not figure out how to begin to solve. The recorded wavelengths for high frequencies at the inner grooves approach the grain size of the vinyl substrate particularly if the disc is made with cheap recycled vinyl so that also creates distortion problems because the vinyl doesn t actually store the required waveforms properly. Alternatively they will restrict the playing time or spread an album over two discs to avoid inner grooves. At first the discs were commonly made from shellac.

The groove usually starts near the periphery and ends near the center of the disc. The stars in the lower left corner of my images show small spikes on them which appear to be oriented on the. As the arm moves towards the center of the lp the stylus angle in relation to the groove changes. Us vinyl sales surpass cd sales for the first time since the 1980s.

Mastering engineers will attempt to mitigate end of side distortion by pressing quieter songs with moderate bass and lower hf energy towards the center of each side. Joni mitchell launches archival release series. In the mid 2000s gradually records made of any material began to be called vinyl records or simply vinyl. This is done differently for every tonearm out if you use a blank disc to check the arm should have a slightoutward bias toward the edge not the center of the record.

Amateur inventor develops new tonearm to tackle vinyl distortion there are plenty more gems out there. Starting in the 1940s polyvinyl chloride became common hence the name vinyl. Because the groove adds some pulling bias to the equation. How to reissue a record in 8 steps with mr bongo.

They are tables where the arm does not pivot but slide across the face of the lp on a set of rails. Because more vinyl is passing under the stylus on the outer tracks of a record higher frequencies are recorded with much broader deflection.